pagecontent.xsd

<?xml version="1.0" encoding="UTF-8" ?>
<!-- defaults in XMLSchema: attribute use="optional" element minOccurs="1" maxOccurs="1" abstract="false" nillable="false" -->
<schema targetNamespace="http://schema.primaresearch.org/PAGE/gts/pagecontent/2019-07-15"
	xmlns:pc="http://schema.primaresearch.org/PAGE/gts/pagecontent/2019-07-15"
	elementFormDefault="qualified"
	xmlns="http://www.w3.org/2001/XMLSchema"
	xmlns:xsd="http://www.w3.org/2001/XMLSchema">
	<element name="PcGts" type="pc:PcGtsType">
		<annotation>
			<documentation>Page Content - Ground Truth and Storage</documentation>
		</annotation>
	</element>
	<complexType name="PcGtsType">
		<sequence>
			<element name="Metadata" type="pc:MetadataType"></element>
			<element name="Page" type="pc:PageType"></element>
		</sequence>
		<attribute name="pcGtsId" type="ID"/>
	</complexType>
	<complexType name="MetadataType">
		<sequence>
			<element name="Creator" type="string"/>
			<element name="Created" type="dateTime">
				<annotation>
					<documentation>
					The timestamp has to be in UTC (Coordinated
					Universal Time) and not local time.
					</documentation>
				</annotation>
			</element>
			<element name="LastChange" type="dateTime">
				<annotation>
					<documentation>
					The timestamp has to be in UTC
					(Coordinated Universal Time)
					and not local time.
					</documentation>
				</annotation>
			</element>
			<element name="Comments" type="string"
				 minOccurs="0" maxOccurs="1">
			</element>
			<element name="UserDefined" type="pc:UserDefinedType"
				 minOccurs="0" maxOccurs="1">
			</element>
			<element name="MetadataItem" type="pc:MetadataItemType"
				 minOccurs="0" maxOccurs="unbounded">
			</element>
		</sequence>
		<attribute name="externalRef" type="string">
			<annotation>
				<documentation>External reference of any kind</documentation>
			</annotation>
		</attribute>
	</complexType>
	<complexType name="MetadataItemType">
		<sequence>
			<element name="Labels" type="pc:LabelsType"
				 minOccurs="0" maxOccurs="unbounded">
				<annotation>
					<documentation>Semantic labels / tags</documentation>
				</annotation>
			</element>
		</sequence>
		<attribute name="type">
			<annotation>
				<documentation>
				Type of metadata (e.g. author)
				</documentation>
			</annotation>
			<simpleType>
				<restriction base="string">
					<enumeration value="author"/>
					<enumeration value="imageProperties"/>
					<enumeration value="processingStep"/>
					<enumeration value="other"/>
				</restriction>
			</simpleType>
		</attribute>
		<attribute name="name" type="string">
			<annotation>
				<documentation>
				E.g. imagePhotometricInterpretation
				</documentation>
			</annotation>
		</attribute>
		<attribute name="value" type="string" use="required">
			<annotation>
				<documentation>E.g. RGB</documentation>
			</annotation>
		</attribute>
		<attribute name="date" type="dateTime"/>
	</complexType>
	<complexType name="LabelsType">
		<sequence>
			<element name="Label" type="pc:LabelType"
				 minOccurs="0" maxOccurs="unbounded">
				<annotation>
					<documentation>
					A semantic label / tag
					</documentation>
				</annotation>
			</element>
		</sequence>
		<attribute name="externalModel" type="string">
			<annotation>
				<documentation>
				Reference to external model / ontology / schema
				</documentation>
			</annotation>
		</attribute>
		<attribute name="externalId" type="string">
			<annotation>
				<documentation>
				E.g. an RDF resource identifier
				(to be used as subject or object of an RDF triple)
				</documentation>
			</annotation>
		</attribute>
		<attribute name="prefix" type="string">
			<annotation>
				<documentation>
				Prefix for all labels (e.g. first part of an URI)
				</documentation>
			</annotation>
		</attribute>
		<attribute name="comments" type="string"/>
	</complexType>
	<complexType name="LabelType">
		<annotation>
			<documentation>Semantic label</documentation>
		</annotation>
		<attribute name="value" type="string" use="required">
			<annotation>
				<documentation>
				The label / tag (e.g. 'person').
				Can be an RDF resource identifier
				(e.g. object of an RDF triple).
				</documentation>
			</annotation>
		</attribute>
		<attribute name="type" type="string">
			<annotation>
				<documentation>
				Additional information on the label
				(e.g. 'YYYY-mm-dd' for a date label).
				Can be used as predicate of an RDF triple.
				</documentation>
			</annotation>
		</attribute>
		<attribute name="comments" type="string">
		</attribute>
	</complexType>
	<complexType name="PageType">
		<sequence>
			<element name="AlternativeImage" type="pc:AlternativeImageType"
				 minOccurs="0" maxOccurs="unbounded">
				<annotation>
					<documentation>
					Alternative document page images
					(e.g. black-and-white).
					</documentation>
				</annotation>
			</element>
			<element name="Border" type="pc:BorderType" minOccurs="0"
				 maxOccurs="1">
			</element>
			<element name="PrintSpace" type="pc:PrintSpaceType"
				 minOccurs="0" maxOccurs="1">
			</element>
			<element name="ReadingOrder" type="pc:ReadingOrderType"
				 minOccurs="0" maxOccurs="1">
				<annotation>
					<documentation>Order of blocks within the page.</documentation>
				</annotation>
			</element>
			<element name="Layers" type="pc:LayersType" minOccurs="0"
				 maxOccurs="1">
				<annotation>
					<documentation>
					Unassigned regions are considered to be in the
					(virtual) default layer which is to be treated
					as below any other layers.
					</documentation>
				</annotation>
			</element>
			<element name="Relations" type="pc:RelationsType"
				 minOccurs="0">
			</element>
			<element name="TextStyle" type="pc:TextStyleType"
				 minOccurs="0" maxOccurs="1">
				<annotation>
					<documentation>Default text style</documentation>
				</annotation>
			</element>
			<element name="UserDefined" type="pc:UserDefinedType"
				 minOccurs="0" maxOccurs="1">
			</element>
			<element name="Labels" type="pc:LabelsType"
				 minOccurs="0" maxOccurs="unbounded">
				<annotation>
					<documentation>Semantic labels / tags</documentation>
				</annotation>
			</element>
			<choice minOccurs="0" maxOccurs="unbounded">
				<element name="TextRegion" type="pc:TextRegionType"/>
				<element name="ImageRegion" type="pc:ImageRegionType"/>
				<element name="LineDrawingRegion" type="pc:LineDrawingRegionType"/>
				<element name="GraphicRegion" type="pc:GraphicRegionType"/>
				<element name="TableRegion" type="pc:TableRegionType"/>
				<element name="ChartRegion" type="pc:ChartRegionType"/>
				<element name="MapRegion" type="pc:MapRegionType"/>
				<element name="SeparatorRegion" type="pc:SeparatorRegionType"/>
				<element name="MathsRegion" type="pc:MathsRegionType"/>
				<element name="ChemRegion" type="pc:ChemRegionType"/>
				<element name="MusicRegion" type="pc:MusicRegionType"/>
				<element name="AdvertRegion" type="pc:AdvertRegionType"/>
				<element name="NoiseRegion" type="pc:NoiseRegionType"/>
				<element name="UnknownRegion" type="pc:UnknownRegionType"/>
				<element name="CustomRegion" type="pc:CustomRegionType"/>
			</choice>
		</sequence>
		<attribute name="imageFilename" type="string" use="required">
			<annotation>
				<documentation>
				Contains the image file name including the file extension.
				</documentation>
			</annotation>
		</attribute>
		<attribute name="imageWidth" type="int" use="required">
			<annotation>
				<documentation>Specifies the width of the image.</documentation>
			</annotation>
		</attribute>
		<attribute name="imageHeight" type="int" use="required">
			<annotation>
				<documentation>Specifies the height of the image.</documentation>
			</annotation>
		</attribute>
		<attribute name="imageXResolution" type="float">
			<annotation>
				<documentation>Specifies the image resolution in width.</documentation>
			</annotation>
		</attribute>
		<attribute name="imageYResolution" type="float">
			<annotation>
				<documentation>Specifies the image resolution in height.</documentation>
			</annotation>
		</attribute>
		<attribute name="imageResolutionUnit">
			<annotation>
				<documentation>
				Specifies the unit of the resolution information
				referring to a standardised unit of measurement
				(pixels per inch, pixels per centimeter or other).
				</documentation>
			</annotation>
			<simpleType>
				<restriction base="string">
					<enumeration value="PPI"/>
					<enumeration value="PPCM"/>
					<enumeration value="other"/>
				</restriction>
			</simpleType>
		</attribute>
		<attribute name="custom" type="string">
			<annotation>
				<documentation>For generic use</documentation>
			</annotation>
		</attribute>
		<attribute name="orientation" type="float">
			<annotation>
				<documentation>
				The angle the rectangle encapsulating the page
				(or its Border)	has to be rotated in clockwise direction
				in order to correct the present skew
				(negative values indicate anti-clockwise rotation).
				(The rotated image can be further referenced
				via “AlternativeImage”.)
				Range: -179.999,180
				</documentation>
			</annotation>
		</attribute>
		<attribute name="type" type="pc:PageTypeSimpleType">
			<annotation>
				<documentation>
				The type of the page within the document
				(e.g. cover page).
				</documentation>
			</annotation>
		</attribute>
		<attribute name="primaryLanguage" type="pc:LanguageSimpleType">
			<annotation>
				<documentation>
				The primary language used in the page
				(lower-level definitions override the page-level definition).
				</documentation>
			</annotation>
		</attribute>
		<attribute name="secondaryLanguage" type="pc:LanguageSimpleType">
			<annotation>
				<documentation>
				The secondary language used in the page
				(lower-level definitions override the page-level definition).
				</documentation>
			</annotation>
		</attribute>
		<attribute name="primaryScript" type="pc:ScriptSimpleType">
			<annotation>
				<documentation>
				The primary script used in the page
				(lower-level definitions override the page-level definition).
				</documentation>
			</annotation>
		</attribute>
		<attribute name="secondaryScript" type="pc:ScriptSimpleType">
			<annotation>
				<documentation>
				The secondary script used in the page
				(lower-level definitions override the page-level definition).
				</documentation>
			</annotation>
		</attribute>
		<attribute name="readingDirection" type="pc:ReadingDirectionSimpleType">
			<annotation>
				<documentation>
				The direction in which text within lines
				should be read (order of words and characters),
				in addition to “textLineOrder”
				(lower-level definitions override the page-level definition).
				</documentation>
			</annotation>
		</attribute>
		<attribute name="textLineOrder"	type="pc:TextLineOrderSimpleType">
			<annotation>
				<documentation>
				The order of text lines within a block,
				in addition to “readingDirection”
				(lower-level definitions override the page-level definition).
				</documentation>
			</annotation>
		</attribute>
		<attribute name="conf" type="pc:ConfSimpleType">
			<annotation>
				<documentation>Confidence value for whole page (between 0 and 1)</documentation>
			</annotation>
		</attribute>
	</complexType>
	<complexType name="TextRegionType">
		<annotation>
			<documentation>
			Pure text is represented as a text region. This includes
			drop capitals, but practically ornate text may be
			considered as a graphic.
			</documentation>
		</annotation>
		<complexContent>
		<extension base="pc:RegionType">
			<sequence>
				<element name="TextLine" type="pc:TextLineType"
					 minOccurs="0" maxOccurs="unbounded"/>
				<element name="TextEquiv" type="pc:TextEquivType"
					 minOccurs="0" maxOccurs="unbounded"/>
				<element name="TextStyle" type="pc:TextStyleType"
					 minOccurs="0" maxOccurs="1"/>
			</sequence>
			<attribute name="orientation" type="float">
				<annotation>
					<documentation>
					The angle the rectangle encapsulating the region
					has to be rotated in clockwise direction
					in order to correct the present skew
					(negative values indicate anti-clockwise rotation).
					(The rotated image can be further referenced
					via “AlternativeImage”.)
					Range: -179.999,180
					</documentation>
				</annotation>
			</attribute>
			<attribute name="type" type="pc:TextTypeSimpleType">
				<annotation>
					<documentation>
					The nature of the text in the region
					</documentation>
				</annotation>
			</attribute>
			<attribute name="leading" type="int">
				<annotation>
					<documentation>
					The degree of space in points between the lines of
					text (line spacing)
					</documentation>
				</annotation>
			</attribute>
			<attribute name="readingDirection" type="pc:ReadingDirectionSimpleType">
				<annotation>
					<documentation>
					The direction in which text within lines
					should be read (order of words and characters),
					in addition to “textLineOrder”.
					</documentation>
				</annotation>
			</attribute>
			<attribute name="textLineOrder"	type="pc:TextLineOrderSimpleType">
				<annotation>
					<documentation>
					The order of text lines within the block,
					in addition to “readingDirection”.
					</documentation>
				</annotation>
			</attribute>
			<attribute name="readingOrientation" type="float">
				<annotation>
					<documentation>
					The angle the baseline of text within the region
					has to be rotated (relative to the rectangle
					encapsulating the region) in clockwise direction
					in order to correct the present skew,
					in addition to “orientation”
					(negative values indicate anti-clockwise rotation).
					Range: -179.999,180
					</documentation>
				</annotation>
			</attribute>
			<attribute name="indented" type="boolean">
				<annotation>
					<documentation>
					Defines whether a region of text is indented or not
					</documentation>
				</annotation>
			</attribute>
			<attribute name="align" type="pc:AlignSimpleType">
				<annotation>
					<documentation>Text align</documentation>
				</annotation>
			</attribute>
			<attribute name="primaryLanguage" type="pc:LanguageSimpleType">
				<annotation>
					<documentation>
					The primary language used in the region
					</documentation>
				</annotation>
			</attribute>
			<attribute name="secondaryLanguage" type="pc:LanguageSimpleType">
				<annotation>
					<documentation>
					The secondary language used in the region
					</documentation>
				</annotation>
			</attribute>
			<attribute name="primaryScript" type="pc:ScriptSimpleType">
				<annotation>
					<documentation>
					The primary script used in the region
					</documentation>
				</annotation>
			</attribute>
			<attribute name="secondaryScript" type="pc:ScriptSimpleType">
				<annotation>
					<documentation>
					The secondary script used in the region
					</documentation>
				</annotation>
			</attribute>
			<attribute name="production" type="pc:ProductionSimpleType"/>
		</extension>
		</complexContent>
	</complexType>
	<complexType name="CoordsType">
		<attribute name="points" type="pc:PointsType" use="required">
			<annotation>
				<documentation>
				Polygon outline of the element as a path of points.
				No points may lie outside the outline of its parent,
				which in the case of Border is the bounding rectangle
				of the root image. Paths are closed by convention,
				i.e. the last point logically connects with the first
				(and at least 3 points are required to span an area).
				Paths must be planar (i.e. must not self-intersect).
				</documentation>
			</annotation>
		</attribute>
		<attribute name="conf" type="pc:ConfSimpleType">
			<annotation>
				<documentation>Confidence value (between 0 and 1)</documentation>
			</annotation>
		</attribute>
	</complexType>
	<complexType name="TextLineType">
		<sequence>
			<element name="AlternativeImage" type="pc:AlternativeImageType"
				 minOccurs="0" maxOccurs="unbounded">
				<annotation>
					<documentation>
					Alternative text line images (e.g.
					black-and-white)
					</documentation>
				</annotation>
			</element>
			<element name="Coords" type="pc:CoordsType"/>
			<element name="Baseline" type="pc:BaselineType"
				 minOccurs="0">
				<annotation>
					<documentation>
					Multiple connected points that mark the baseline
					of the glyphs
					</documentation>
				</annotation>
			</element>
			<element name="Word" type="pc:WordType" minOccurs="0"
				 maxOccurs="unbounded">
			</element>
			<element name="TextEquiv" type="pc:TextEquivType"
				 minOccurs="0" maxOccurs="unbounded">
			</element>
			<element name="TextStyle" type="pc:TextStyleType"
				 minOccurs="0">
			</element>
			<element name="UserDefined" type="pc:UserDefinedType"
				 minOccurs="0" maxOccurs="1">
			</element>
			<element name="Labels" type="pc:LabelsType"
				 minOccurs="0" maxOccurs="unbounded">
				<annotation>
					<documentation>Semantic labels / tags</documentation>
				</annotation>
			</element>			
		</sequence>
		<attribute name="id" type="ID" use="required"/>
		<attribute name="primaryLanguage" type="pc:LanguageSimpleType">
			<annotation>
				<documentation>
				Overrides primaryLanguage attribute of parent text
				region
				</documentation>
			</annotation>
		</attribute>
		<attribute name="primaryScript" type="pc:ScriptSimpleType">
			<annotation>
				<documentation>
				The primary script used in the text line
				</documentation>
			</annotation>
		</attribute>
		<attribute name="secondaryScript" type="pc:ScriptSimpleType">
			<annotation>
				<documentation>
				The secondary script used in the text line 
				</documentation>
			</annotation>
		</attribute>
		<attribute name="readingDirection" type="pc:ReadingDirectionSimpleType">
			<annotation>
				<documentation>
				The direction in which text within the line
				should be read (order of words and characters).
				</documentation>
			</annotation>
		</attribute>
		<attribute name="production" type="pc:ProductionSimpleType">
			<annotation>
				<documentation>
				Overrides the production attribute of the parent
				text region
				</documentation>
			</annotation>
		</attribute>
		<attribute name="custom" type="string">
			<annotation>
				<documentation>For generic use</documentation>
			</annotation>
		</attribute>
		<attribute name="comments" type="string"/>
		<attribute name="index" type="int">
			<annotation>
				<documentation>
				Position (order number) of this text line within the
				parent text region.
				</documentation>
			</annotation>
		</attribute>
	</complexType>
	<complexType name="WordType">
		<sequence>
			<element name="AlternativeImage" type="pc:AlternativeImageType"
				 minOccurs="0" maxOccurs="unbounded">
				<annotation>
					<documentation>
					Alternative word images (e.g.
					black-and-white)
					</documentation>
				</annotation>
			</element>
			<element name="Coords" type="pc:CoordsType"/>
			<element name="Glyph" type="pc:GlyphType" minOccurs="0"
				maxOccurs="unbounded">
			</element>
			<element name="TextEquiv" type="pc:TextEquivType"
				minOccurs="0" maxOccurs="unbounded">
			</element>
			<element name="TextStyle" type="pc:TextStyleType"
				minOccurs="0">
			</element>
			<element name="UserDefined" type="pc:UserDefinedType"
				 minOccurs="0" maxOccurs="1">
			</element>
			<element name="Labels" type="pc:LabelsType" minOccurs="0" maxOccurs="unbounded">
				<annotation>
					<documentation>Semantic labels / tags</documentation>
				</annotation>
			</element>			
		</sequence>
		<attribute name="id" type="ID" use="required"/>
		<attribute name="language" type="pc:LanguageSimpleType">
			<annotation>
				<documentation>
				Overrides primaryLanguage attribute of parent line
				and/or text region
				</documentation>
			</annotation>
		</attribute>
		<attribute name="primaryScript" type="pc:ScriptSimpleType">
			<annotation>
				<documentation>
				The primary script used in the word
				</documentation>
			</annotation>
		</attribute>
		<attribute name="secondaryScript" type="pc:ScriptSimpleType">
			<annotation>
				<documentation>
				The secondary script used in the word 
				</documentation>
			</annotation>
		</attribute>
		<attribute name="readingDirection" type="pc:ReadingDirectionSimpleType">
			<annotation>
				<documentation>
				The direction in which text within the word
				should be read (order of characters).
				</documentation>
			</annotation>
		</attribute>
		<attribute name="production" type="pc:ProductionSimpleType">
			<annotation>
				<documentation>
				Overrides the production attribute of the parent
				text line and/or text region.
				</documentation>
			</annotation>
		</attribute>
		<attribute name="custom" type="string">
			<annotation>
				<documentation>For generic use</documentation>
			</annotation>
		</attribute>
		<attribute name="comments" type="string"/>
	</complexType>
	<complexType name="GlyphType">
		<sequence>
			<element name="AlternativeImage" type="pc:AlternativeImageType"
				 minOccurs="0" maxOccurs="unbounded">
				<annotation>
					<documentation>
					Alternative glyph images (e.g.
					black-and-white)
					</documentation>
				</annotation>
			</element>
			<element name="Coords" type="pc:CoordsType"/>
			<element name="Graphemes" type="pc:GraphemesType"
				 minOccurs="0" maxOccurs="1">
				<annotation>
					<documentation>
					Container for graphemes, grapheme groups and
					non-printing characters
					</documentation>
				</annotation>
			</element>
			<element name="TextEquiv" type="pc:TextEquivType"
				 minOccurs="0" maxOccurs="unbounded">
			</element>
			<element name="TextStyle" type="pc:TextStyleType"
				 minOccurs="0">
			</element>
			<element name="UserDefined" type="pc:UserDefinedType"
				 minOccurs="0" maxOccurs="1">
			</element>
			<element name="Labels" type="pc:LabelsType"
				 minOccurs="0" maxOccurs="unbounded">
				<annotation>
					<documentation>Semantic labels / tags</documentation>
				</annotation>
			</element>
		</sequence>
		<attribute name="id" type="ID" use="required"/>
		<attribute name="ligature" use="optional" type="boolean"/>
		<attribute name="symbol" use="optional" type="boolean"/>
		<attribute name="script" type="pc:ScriptSimpleType">
			<annotation>
				<documentation>
				The script used for the glyph
				</documentation>
			</annotation>
		</attribute>
		<attribute name="production" type="pc:ProductionSimpleType">
			<annotation>
				<documentation>
				Overrides the production attribute of the parent
				word / text line / text region.
				</documentation>
			</annotation>
		</attribute>
		<attribute name="custom" type="string">
			<annotation>
				<documentation>For generic use</documentation>
			</annotation>
		</attribute>
		<attribute name="comments" type="string"/>
	</complexType>
	<complexType name="TextEquivType">
		<sequence>
			<element name="PlainText" type="string" minOccurs="0">
				<annotation>
					<documentation>
					Text in a "simple" form (ASCII or extended ASCII
					as mostly used for typing). I.e. no use of
					special characters for ligatures (should be
					stored as two separate characters) etc.
					</documentation>
				</annotation>
			</element>
			<element name="Unicode" type="string">
				<annotation>
					<documentation>
					Correct encoding of the original, always using
					the corresponding Unicode code point. I.e.
					ligatures have to be represented as one
					character etc.
					</documentation>
				</annotation>
			</element>
		</sequence>
		<attribute name="index" use="optional">
			<annotation>
				<documentation>
				Used for sort order in case multiple TextEquivs are defined.
				The text content with the lowest index should be interpreted
				as the main text content.
				</documentation>
			</annotation>
			<simpleType>
				<restriction base="integer">
					<minInclusive value="0"></minInclusive>
				</restriction>
			</simpleType>
		</attribute>
		<attribute name="conf" type="pc:ConfSimpleType">
			<annotation>
				<documentation>OCR confidence value (between 0 and 1)</documentation>
			</annotation>
		</attribute>
		<attribute name="dataType" type="pc:TextDataTypeSimpleType">
			<annotation>
				<documentation>
				Type of text content (is it free text or a number, for instance).
				This is only a descriptive attribute, the text type
				is not checked during XML validation.
				</documentation>
			</annotation>
		</attribute>
		<attribute name="dataTypeDetails" type="string">
			<annotation>
				<documentation>
				Refinement for dataType attribute. Can be a regular expression, for instance.
				</documentation>
			</annotation>
		</attribute>
		<!-- <attribute name="mergeWithNextRule" type="pc:TextMergeRuleSimpleType">
				<annotation>
					<documentation>Rule for merging consecutive text objects. The rule applies to the first object of a pair (i.e. 'remove-last' removes the last
		character of the first region, can be used to remove hyphen, for example)</documentation>
				</annotation>
		</attribute>
		<attribute name="mergeWithNextRuleData" type="string">
				<annotation>
					<documentation>Custom data for mergeRule attribute. Can number of characters to be removed, for example.</documentation>
				</annotation>
		</attribute> -->
		<attribute name="comments" type="string"/>
	</complexType>
	<complexType name="ImageRegionType">
		<annotation>
			<documentation>
			An image is considered to be more intricate and complex
			than a graphic. These can be photos or drawings.
			</documentation>
		</annotation>
		<complexContent>
			<extension base="pc:RegionType">
				<attribute name="orientation" type="float">
					<annotation>
						<documentation>
						The angle the rectangle encapsulating a region
						has to be rotated in clockwise direction
						in order to correct the present skew
						(negative values indicate anti-clockwise rotation).
						Range: -179.999,180
						</documentation>
					</annotation>
				</attribute>
				<attribute name="colourDepth" type="pc:ColourDepthSimpleType">
					<annotation>
						<documentation>
						The colour bit depth required for the region
						</documentation>
					</annotation>
				</attribute>
				<attribute name="bgColour" type="pc:ColourSimpleType">
					<annotation>
						<documentation>
						The background colour of the region
						</documentation>
					</annotation>
				</attribute>
				<attribute name="embText" type="boolean">
					<annotation>
						<documentation>
						Specifies whether the region also contains
						text
						</documentation>
					</annotation>
				</attribute>
			</extension>
		</complexContent>
	</complexType>
	<complexType name="LineDrawingRegionType">
		<annotation>
			<documentation>
			A line drawing is a single colour illustration without
			solid areas.
			</documentation>
		</annotation>
		<complexContent>
			<extension base="pc:RegionType">
				<attribute name="orientation" type="float">
					<annotation>
						<documentation>
						The angle the rectangle encapsulating a region
						has to be rotated in clockwise direction
						in order to correct the present skew
						(negative values indicate anti-clockwise rotation).
						Range: -179.999,180
						</documentation>
					</annotation>
				</attribute>
				<attribute name="penColour" type="pc:ColourSimpleType">
					<annotation>
						<documentation>
						The pen (foreground) colour of the region
						</documentation>
					</annotation>
				</attribute>
				<attribute name="bgColour" type="pc:ColourSimpleType">
					<annotation>
						<documentation>
						The background colour of the region
						</documentation>
					</annotation>
				</attribute>
				<attribute name="embText" type="boolean">
					<annotation>
						<documentation>
						Specifies whether the region also contains
						text
						</documentation>
					</annotation>
				</attribute>
			</extension>
		</complexContent>
	</complexType>
	<complexType name="GraphicRegionType">
		<annotation>
			<documentation>
			Regions containing simple graphics, such as a company
			logo, should be marked as graphic regions.
			</documentation>
		</annotation>
		<complexContent>
			<extension base="pc:RegionType">
				<attribute name="orientation" type="float">
					<annotation>
						<documentation>
						The angle the rectangle encapsulating a region
						has to be rotated in clockwise direction
						in order to correct the present skew
						(negative values indicate anti-clockwise rotation).
						Range: -179.999,180
						</documentation>
					</annotation>
				</attribute>
				<attribute name="type" type="pc:GraphicsTypeSimpleType">
					<annotation>
						<documentation>
						The type of graphic in the region
						</documentation>
					</annotation>
				</attribute>
				<attribute name="numColours" type="int">
					<annotation>
						<documentation>
						An approximation of the number of colours
						used in the region
						</documentation>
					</annotation>
				</attribute>
				<attribute name="embText" type="boolean">
					<annotation>
						<documentation>
						Specifies whether the region also contains
						text.
						</documentation>
					</annotation>
				</attribute>
			</extension>
		</complexContent>
	</complexType>
	<complexType name="TableRegionType">
		<annotation>
			<documentation>
			Tabular data in any form is represented with a table
			region. Rows and columns may or may not have separator
			lines; these lines are not separator regions.
			</documentation>
		</annotation>
		<complexContent>
			<extension base="pc:RegionType">
				<sequence>
					<element name="Grid" type="pc:GridType"
						 minOccurs="0" maxOccurs="1">
						<annotation>
							<documentation>Table grid (visible or virtual grid lines)</documentation>
						</annotation>
					</element>
				</sequence>
				<attribute name="orientation" type="float">
					<annotation>
						<documentation>
						The angle the rectangle encapsulating a	region
						has to be rotated in clockwise direction
						in order to correct the present	skew
						(negative values indicate anti-clockwise rotation).
						Range: -179.999,180
						</documentation>
					</annotation>
				</attribute>
				<attribute name="rows" type="int">
					<annotation>
						<documentation>
						The number of rows present in the table
						</documentation>
					</annotation>
				</attribute>
				<attribute name="columns" type="int">
					<annotation>
						<documentation>
						The number of columns present in the table
						</documentation>
					</annotation>
				</attribute>
				<attribute name="lineColour" type="pc:ColourSimpleType">
					<annotation>
						<documentation>
						The colour of the lines used in the region
						</documentation>
					</annotation>
				</attribute>
				<attribute name="bgColour" type="pc:ColourSimpleType">
					<annotation>
						<documentation>
						The background colour of the region
						</documentation>
					</annotation>
				</attribute>
				<attribute name="lineSeparators" type="boolean">
					<annotation>
						<documentation>
						Specifies the presence of line separators
						</documentation>
					</annotation>
				</attribute>
				<attribute name="embText" type="boolean">
					<annotation>
						<documentation>
						Specifies whether the region also contains
						text
						</documentation>
					</annotation>
				</attribute>
			</extension>
		</complexContent>
	</complexType>
	<complexType name="GridType">
		<annotation>
			<documentation>
			Matrix of grid points defining the table grid on the page.
			</documentation>
		</annotation>
		<sequence>
			<element name="GridPoints" type="pc:GridPointsType"
				 minOccurs="2" maxOccurs="unbounded">
				<annotation>
					<documentation>
					One row in the grid point matrix.
					Points with x,y coordinates.
					(note: for a table with n table rows there should be n+1 grid rows)
					</documentation>
				</annotation>
			</element>
		</sequence>
	</complexType>
	<complexType name="GridPointsType">
		<annotation>
			<documentation>Points with x,y coordinates.</documentation>
		</annotation>
		<attribute name="index" type="int" use="required">
			<annotation>
				<documentation>
				The grid row index
				</documentation>
			</annotation>
		</attribute>
		<attribute name="points" type="pc:PointsType"
			   use="required"/>
	</complexType>
	<complexType name="ChartRegionType">
		<annotation>
			<documentation>
			Regions containing charts or graphs of any type, should
			be marked as chart regions.
			</documentation>
		</annotation>
		<complexContent>
			<extension base="pc:RegionType">
				<attribute name="orientation" type="float">
					<annotation>
						<documentation>
						The angle the rectangle encapsulating a region
						has to be rotated in clockwise direction
						in order to correct the present skew
						(negative values indicate anti-clockwise rotation).
						Range: -179.999,180
						</documentation>
					</annotation>
				</attribute>
				<attribute name="type" type="pc:ChartTypeSimpleType">
					<annotation>
						<documentation>
						The type of chart in the region
						</documentation>
					</annotation>
				</attribute>
				<attribute name="numColours" type="int">
					<annotation>
						<documentation>
						An approximation of the number of colours
						used in the region
						</documentation>
					</annotation>
				</attribute>
				<attribute name="bgColour" type="pc:ColourSimpleType">
					<annotation>
						<documentation>
						The background colour of the region
						</documentation>
					</annotation>
				</attribute>
				<attribute name="embText" type="boolean">
					<annotation>
						<documentation>
						Specifies whether the region also contains
						text
						</documentation>
					</annotation>
				</attribute>
			</extension>
		</complexContent>
	</complexType>
	<complexType name="SeparatorRegionType">
		<annotation>
			<documentation>
			Separators are lines that lie between columns and
			paragraphs and can be used to logically separate
			different articles from each other.
			</documentation>
		</annotation>
		<complexContent>
			<extension base="pc:RegionType">
				<attribute name="orientation" type="float">
					<annotation>
						<documentation>
						The angle the rectangle encapsulating a region
						has to be rotated in clockwise direction
						in order to correct the present skew
						(negative values indicate anti-clockwise rotation).
						Range: -179.999,180
						</documentation>
					</annotation>
				</attribute>
				<attribute name="colour" type="pc:ColourSimpleType">
					<annotation>
						<documentation>
						The colour of the separator
						</documentation>
					</annotation>
				</attribute>
			</extension>
		</complexContent>
	</complexType>
	<complexType name="MathsRegionType">
		<annotation>
			<documentation>
			Regions containing equations and mathematical symbols
			should be marked as maths regions.
			</documentation>
		</annotation>
		<complexContent>
			<extension base="pc:RegionType">
				<attribute name="orientation" type="float">
					<annotation>
						<documentation>
						The angle the rectangle encapsulating a region
						has to be rotated in clockwise direction
						in order to correct the present skew
						(negative values indicate anti-clockwise rotation).
						Range: -179.999,180
						</documentation>
					</annotation>
				</attribute>
				<attribute name="bgColour" type="pc:ColourSimpleType">
					<annotation>
						<documentation>
						The background colour of the region
						</documentation>
					</annotation>
				</attribute>
			</extension>
		</complexContent>
	</complexType>
	<complexType name="ChemRegionType">
		<annotation>
			<documentation>
			Regions containing chemical formulas.
			</documentation>
		</annotation>
		<complexContent>
			<extension base="pc:RegionType">
				<attribute name="orientation" type="float">
					<annotation>
						<documentation>
						The angle the rectangle encapsulating a
						region has to be rotated in clockwise
						direction in order to correct the present
						skew (negative values indicate
						anti-clockwise rotation). Range:
						-179.999,180
						</documentation>
					</annotation>
				</attribute>
				<attribute name="bgColour" type="pc:ColourSimpleType">
					<annotation>
						<documentation>
						The background colour of the region
						</documentation>
					</annotation>
				</attribute>
			</extension>
		</complexContent>
	</complexType>
	<complexType name="MapRegionType">
		<annotation>
			<documentation>
			Regions containing maps.
			</documentation>
		</annotation>
		<complexContent>
			<extension base="pc:RegionType">
				<attribute name="orientation" type="float">
					<annotation>
						<documentation>
						The angle the rectangle encapsulating a
						region has to be rotated in clockwise
						direction in order to correct the present
						skew (negative values indicate
						anti-clockwise rotation). Range:
						-179.999,180
						</documentation>
					</annotation>
				</attribute>
			</extension>
		</complexContent>
	</complexType>
	<complexType name="MusicRegionType">
		<annotation>
			<documentation>
			Regions containing musical notations.
			</documentation>
		</annotation>
		<complexContent>
			<extension base="pc:RegionType">
				<attribute name="orientation" type="float">
					<annotation>
						<documentation>
						The angle the rectangle encapsulating a region
						has to be rotated in clockwise direction
						in order to correct the present skew
						(negative values indicate anti-clockwise rotation).
						Range: -179.999,180
						</documentation>
					</annotation>
				</attribute>
				<attribute name="bgColour" type="pc:ColourSimpleType">
					<annotation>
						<documentation>
						The background colour of the region
						</documentation>
					</annotation>
				</attribute>
			</extension>
		</complexContent>
	</complexType>
	<complexType name="AdvertRegionType">
		<annotation>
			<documentation>
			Regions containing advertisements.
			</documentation>
		</annotation>
		<complexContent>
			<extension base="pc:RegionType">
				<attribute name="orientation" type="float">
					<annotation>
						<documentation>
						The angle the rectangle encapsulating a region
						has to be rotated in clockwise direction
						in order to correct the present skew
						(negative values indicate anti-clockwise rotation).
						Range: -179.999,180
						</documentation>
					</annotation>
				</attribute>
				<attribute name="bgColour" type="pc:ColourSimpleType">
					<annotation>
						<documentation>
						The background colour of the region
						</documentation>
					</annotation>
				</attribute>
			</extension>
		</complexContent>
	</complexType>
	<complexType name="NoiseRegionType">
		<annotation>
			<documentation>
			Noise regions are regions where no real data lies, only
			false data created by artifacts on the document or
			scanner noise.
			</documentation>
		</annotation>
		<complexContent>
			<extension base="pc:RegionType"></extension>
		</complexContent>
	</complexType>
	<complexType name="UnknownRegionType">
		<annotation>
			<documentation>
			To be used if the region type cannot be ascertained.
			</documentation>
		</annotation>
		<complexContent>
			<extension base="pc:RegionType"></extension>
		</complexContent>
	</complexType>
	<complexType name="CustomRegionType">
		<annotation>
			<documentation>
			Regions containing content that is not covered
			by the default types (text, graphic, image,
			line drawing, chart, table, separator, maths,
			map, music, chem, advert, noise, unknown).
			</documentation>
		</annotation>
		<complexContent>
			<extension base="pc:RegionType">
				<attribute name="type" type="string">
					<annotation>
						<documentation>
						Information on the type of content represented by this region
						</documentation>
					</annotation>
				</attribute>
			</extension>
		</complexContent>
	</complexType>
	<complexType name="PrintSpaceType">
		<annotation>
			<documentation>
			Determines the effective area on the paper of a printed page.
			Its size is equal for all pages of a book
			(exceptions: titlepage, multipage pictures).
			It contains all living elements (except marginals)
			like body type, footnotes, headings, running titles.
			It does not contain pagenumber (if not part of running title),
			marginals, signature mark, preview words.
			</documentation>
		</annotation>
		<sequence>
			<element name="Coords" type="pc:CoordsType"/>
		</sequence>
	</complexType>
	<complexType name="ReadingOrderType">
		<annotation>
			<documentation>
			Definition of the reading order within the page.
			To express a reading order between regions,
			they have to be referenced by an OrderedGroup.
			To express a non-sequential relationship (while still
			referencing them as part of the overall structural tree),
			they have to be referenced by an UnorderedGroup.
			Groups may contain further groups, just as regions may
			contain further regions.
			Regions may be referenced only once by any ReadingOrder
			element. (That is, the @regionRef define an injective
			mapping from the ReadingOrder tree to the Region tree.)
			</documentation>
		</annotation>
		<choice minOccurs="1" maxOccurs="1">
			<element name="OrderedGroup" type="pc:OrderedGroupType"/>
			<element name="UnorderedGroup" type="pc:UnorderedGroupType"/>
		</choice>
		<attribute name="conf" type="pc:ConfSimpleType">
			<annotation>
				<documentation>Confidence value (between 0 and 1)</documentation>
			</annotation>
		</attribute>
	</complexType>
	<complexType name="RegionRefType">
		<annotation>
			<documentation>Region reference in an UnorderedGroup(Indexed)</documentation>
		</annotation>
		<attribute name="regionRef" type="IDREF" use="required"/>
	</complexType>
	<complexType name="OrderedGroupType">
		<annotation>
			<documentation>
			Group containing index-ordered elements within an UnorderedGroup(Indexed)
			Elements must be sorted ascending strictly monotonically according to their
			@index, regardless of their type. (That is, the index of each two consecutive
			OrderedGroupIndexed, UnorderedGroupIndexed or RegionRefIndexed elements
			must increase by at least one.)
			</documentation>
		</annotation>
		<sequence>
			<element name="UserDefined" type="pc:UserDefinedType"
				 minOccurs="0" maxOccurs="1">
			</element>
			<element name="Labels" type="pc:LabelsType"
				 minOccurs="0" maxOccurs="unbounded">
				<annotation>
					<documentation>Semantic labels / tags</documentation>
				</annotation>
			</element>
			<choice minOccurs="1" maxOccurs="unbounded">
				<element name="RegionRefIndexed" type="pc:RegionRefIndexedType"/>
				<element name="OrderedGroupIndexed" type="pc:OrderedGroupIndexedType"/>
				<element name="UnorderedGroupIndexed" type="pc:UnorderedGroupIndexedType"/>
			</choice>
		</sequence>
		<attribute name="id" type="ID" use="required"/>
		<attribute name="regionRef" type="IDREF">
			<annotation>
				<documentation>
				Optional link to a parent region of nested regions.
				The parent region doubles as reading order group.
				Only the nested regions should be allowed as group members.
				</documentation>
			</annotation>
		</attribute>
		<attribute name="caption" type="string"/>
		<attribute name="type" type="pc:GroupTypeSimpleType"/>
		<attribute name="continuation" type="boolean">
			<annotation>
				<documentation>
				Is this group a continuation of another group
				(from previous column or page, for example)?
				</documentation>
        		</annotation>
		</attribute>
		<attribute name="custom" type="string">
			<annotation>
				<documentation>For generic use</documentation>
			</annotation>
		</attribute>
		<attribute name="comments" type="string"/>
	</complexType>
	<complexType name="UnorderedGroupType">
		<annotation>
			<documentation>
			Group containing unordered elements within an UnorderedGroup(Indexed)
			Elements need not be sorted, and may be mixed by type. (That is,
			the sequence of	OrderedGroup, UnorderedGroup or RegionRef elements
			may be ordered arbitrarily.)
			</documentation>
		</annotation>
		<sequence>
			<element name="UserDefined" type="pc:UserDefinedType"
				 minOccurs="0" maxOccurs="1">
			</element>
			<element name="Labels" type="pc:LabelsType"
				 minOccurs="0" maxOccurs="unbounded">
				<annotation>
					<documentation>Semantic labels / tags</documentation>
				</annotation>
			</element>
			<choice minOccurs="1" maxOccurs="unbounded">
				<element name="RegionRef" type="pc:RegionRefType"/>
				<element name="OrderedGroup" type="pc:OrderedGroupType"/>
				<element name="UnorderedGroup" type="pc:UnorderedGroupType"/>
			</choice>
		</sequence>
		<attribute name="id" type="ID" use="required"/>
		<attribute name="regionRef" type="IDREF">
			<annotation>
				<documentation>
				Optional link to a parent region of nested regions.
				The parent region doubles as reading order group.
				Only the nested regions should be allowed as group members.
				</documentation>
			</annotation>
		</attribute>
		<attribute name="caption" type="string"/>
		<attribute name="type" type="pc:GroupTypeSimpleType"/>
		<attribute name="continuation" type="boolean">
			<annotation>
				<documentation>
				Is this group a continuation of another group
				(from previous column or page, for example)?
				</documentation>
			</annotation>
		</attribute>
		<attribute name="custom" type="string">
			<annotation>
				<documentation>For generic use</documentation>
			</annotation>
		</attribute>
		<attribute name="comments" type="string"/>
	</complexType>
	<complexType name="RegionRefIndexedType">
		<annotation>
			<documentation>Region reference within an OrderedGroup(Indexed)</documentation>
		</annotation>
		<attribute name="index" type="int" use="required">
			<annotation>
				<documentation>Position (order number) of this item within the current hierarchy level.</documentation>
			</annotation>
		</attribute>
		<attribute name="regionRef" type="IDREF" use="required"/>
	</complexType>
	<complexType name="OrderedGroupIndexedType">
		<annotation>
			<documentation>
			Group containing index-ordered elements within an OrderedGroup(Indexed).
			Elements must be sorted ascending strictly monotonically according to their
			@index, regardless of their type. (That is, the index of each two consecutive
			OrderedGroupIndexed, UnorderedGroupIndexed or RegionRefIndexed elements
			must increase by at least one.)
			</documentation>
		</annotation>
		<sequence>
			<element name="UserDefined" type="pc:UserDefinedType"
				 minOccurs="0" maxOccurs="1"/>
			<element name="Labels" type="pc:LabelsType"
				 minOccurs="0" maxOccurs="unbounded">
				<annotation>
					<documentation>Semantic labels / tags</documentation>
				</annotation>
			</element>
			<choice minOccurs="1" maxOccurs="unbounded">
				<element name="RegionRefIndexed" type="pc:RegionRefIndexedType"/>
				<element name="OrderedGroupIndexed" type="pc:OrderedGroupIndexedType"/>
				<element name="UnorderedGroupIndexed" type="pc:UnorderedGroupIndexedType"/>
			</choice>
		</sequence>
		<attribute name="id" type="ID" use="required"/>
		<attribute name="regionRef" type="IDREF">
			<annotation>
				<documentation>
				Optional link to a parent region of nested regions.
				The parent region doubles as reading order group.
				Only the nested regions should be allowed as group members.
				</documentation>
			</annotation>
		</attribute>
		<attribute name="index" type="int" use="required">
			<annotation>
				<documentation>
				Position (order number) of this item within the
				current hierarchy level.
				</documentation>
			</annotation>
		</attribute>
		<attribute name="caption" type="string"/>
		<attribute name="type" type="pc:GroupTypeSimpleType"/>
		<attribute name="continuation" type="boolean">
			<annotation>
				<documentation>
				Is this group a continuation of another group (from
				previous column or page, for example)?
				</documentation>
			</annotation>
		</attribute>
		<attribute name="custom" type="string">
			<annotation>
				<documentation>For generic use</documentation>
			</annotation>
		</attribute>
		<attribute name="comments" type="string"/>
	</complexType>
	<complexType name="UnorderedGroupIndexedType">
		<annotation>
			<documentation>
			Group containing unordered elements within an OrderedGroup(Indexed)
			Elements need not be sorted, and may be mixed by type. (That is,
			the sequence of	OrderedGroup, UnorderedGroup or RegionRef elements
			may be ordered arbitrarily.)
			</documentation>
		</annotation>
		<sequence>
			<element name="UserDefined" type="pc:UserDefinedType"
				 minOccurs="0" maxOccurs="1">
			</element>
			<element name="Labels" type="pc:LabelsType"
				 minOccurs="0" maxOccurs="unbounded">
				<annotation>
					<documentation>Semantic labels / tags</documentation>
				</annotation>
			</element>
			<choice minOccurs="1" maxOccurs="unbounded">
				<element name="RegionRef" type="pc:RegionRefType"/>
				<element name="OrderedGroup" type="pc:OrderedGroupType"/>
				<element name="UnorderedGroup" type="pc:UnorderedGroupType"/>
			</choice>
		</sequence>
		<attribute name="id" type="ID" use="required"/>
		<attribute name="regionRef" type="IDREF">
			<annotation>
				<documentation>
				Optional link to a parent region of nested regions.
				The parent region doubles as reading order group.
				Only the nested regions should be allowed as group members.
				</documentation>
			</annotation>
		</attribute>
		<attribute name="index" type="int" use="required">
			<annotation>
				<documentation>
				Position (order number) of this item within the
				current hierarchy level.
				</documentation>
			</annotation>
		</attribute>
		<attribute name="caption" type="string"/>
		<attribute name="type" type="pc:GroupTypeSimpleType"/>
		<attribute name="continuation" type="boolean">
			<annotation>
				<documentation>
				Is this group a continuation of another group
				(from previous column or page, for example)?
				</documentation>
			</annotation>
		</attribute>
		<attribute name="custom" type="string">
			<annotation>
				<documentation>For generic use</documentation>
			</annotation>
		</attribute>
		<attribute name="comments" type="string"/>
	</complexType>
	<complexType name="BorderType">
		<annotation>
			<documentation>
			Border of the actual page (if the scanned image
			contains parts not belonging to the page).
			</documentation>
		</annotation>
		<sequence>
			<element name="Coords" type="pc:CoordsType"/>
		</sequence>
	</complexType>
	<simpleType name="ColourSimpleType">
		<restriction base="string">
			<enumeration value="black"/>
			<enumeration value="blue"/>
			<enumeration value="brown"/>
			<enumeration value="cyan"/>
			<enumeration value="green"/>
			<enumeration value="grey"/>
			<enumeration value="indigo"/>
			<enumeration value="magenta"/>
			<enumeration value="orange"/>
			<enumeration value="pink"/>
			<enumeration value="red"/>
			<enumeration value="turquoise"/>
			<enumeration value="violet"/>
			<enumeration value="white"/>
			<enumeration value="yellow"/>
			<enumeration value="other"/>
		</restriction>
	</simpleType>
	<simpleType name="ReadingDirectionSimpleType">
		<restriction base="string">
			<enumeration value="left-to-right"/>
			<enumeration value="right-to-left"/>
			<enumeration value="top-to-bottom"/>
			<enumeration value="bottom-to-top"/>
		</restriction>
	</simpleType>
	<simpleType name="TextLineOrderSimpleType">
		<restriction base="string">
			<enumeration value="top-to-bottom"/>
			<enumeration value="bottom-to-top"/>
			<enumeration value="left-to-right"/>
			<enumeration value="right-to-left"/>
		</restriction>
	</simpleType>
	<simpleType name="TextTypeSimpleType">
		<restriction base="string">
			<enumeration value="paragraph"/>
			<enumeration value="heading"/>
			<enumeration value="caption"/>
			<enumeration value="header"/>
			<enumeration value="footer"/>
			<enumeration value="page-number"/>
			<enumeration value="drop-capital"/>
			<enumeration value="credit"/>
			<enumeration value="floating"/>
			<enumeration value="signature-mark"/>
			<enumeration value="catch-word"/>
			<enumeration value="marginalia"/>
			<enumeration value="footnote"/>
			<enumeration value="footnote-continued"/>
			<enumeration value="endnote"/>
			<enumeration value="TOC-entry"/>
			<enumeration value="list-label"/>
			<enumeration value="other"/>
		</restriction>
	</simpleType>
	<simpleType name="PageTypeSimpleType">
		<restriction base="string">
			<enumeration value="front-cover"/>
			<enumeration value="back-cover"/>
			<enumeration value="title"/>
			<enumeration value="table-of-contents"/>
			<enumeration value="index"/>
			<enumeration value="content"/>
			<enumeration value="blank"/>
			<enumeration value="other"/>
		</restriction>
	</simpleType>
	<simpleType name="ConfSimpleType">
		<restriction base="float">
			<minInclusive value="0"></minInclusive>
			<maxInclusive value="1"></maxInclusive>
		</restriction>
	</simpleType>
	<simpleType name="LanguageSimpleType">
		<annotation>
			<documentation>ISO 639.x 2016-07-14</documentation>
		</annotation>
		<restriction base="string">
			<enumeration value="Abkhaz"/>
			<enumeration value="Afar"/>
			<enumeration value="Afrikaans"/>
			<enumeration value="Akan"/>
			<enumeration value="Albanian"/>
			<enumeration value="Amharic"/>
			<enumeration value="Arabic"/>
			<enumeration value="Aragonese"/>
			<enumeration value="Armenian"/>
			<enumeration value="Assamese"/>
			<enumeration value="Avaric"/>
			<enumeration value="Avestan"/>
			<enumeration value="Aymara"/>
			<enumeration value="Azerbaijani"/>
			<enumeration value="Bambara"/>
			<enumeration value="Bashkir"/>
			<enumeration value="Basque"/>
			<enumeration value="Belarusian"/>
			<enumeration value="Bengali"/>
			<enumeration value="Bihari"/>
			<enumeration value="Bislama"/>
			<enumeration value="Bosnian"/>
			<enumeration value="Breton"/>
			<enumeration value="Bulgarian"/>
			<enumeration value="Burmese"/>
			<enumeration value="Cambodian"/>
			<enumeration value="Cantonese"/>
			<enumeration value="Catalan"/>
			<enumeration value="Chamorro"/>
			<enumeration value="Chechen"/>
			<enumeration value="Chichewa"/>
			<enumeration value="Chinese"/>
			<enumeration value="Chuvash"/>
			<enumeration value="Cornish"/>
			<enumeration value="Corsican"/>
			<enumeration value="Cree"/>
			<enumeration value="Croatian"/>
			<enumeration value="Czech"/>
			<enumeration value="Danish"/>
			<enumeration value="Divehi"/>
			<enumeration value="Dutch"/>
			<enumeration value="Dzongkha"/>
			<enumeration value="English"/>
			<enumeration value="Esperanto"/>
			<enumeration value="Estonian"/>
			<enumeration value="Ewe"/>
			<enumeration value="Faroese"/>
			<enumeration value="Fijian"/>
			<enumeration value="Finnish"/>
			<enumeration value="French"/>
			<enumeration value="Fula"/>
			<enumeration value="Gaelic"/>
			<enumeration value="Galician"/>
			<enumeration value="Ganda"/>
			<enumeration value="Georgian"/>
			<enumeration value="German"/>
			<enumeration value="Greek"/>
			<enumeration value="Guaraní"/>
			<enumeration value="Gujarati"/>
			<enumeration value="Haitian"/>
			<enumeration value="Hausa"/>
			<enumeration value="Hebrew"/>
			<enumeration value="Herero"/>
			<enumeration value="Hindi"/>
			<enumeration value="Hiri Motu"/>
			<enumeration value="Hungarian"/>
			<enumeration value="Icelandic"/>
			<enumeration value="Ido"/>
			<enumeration value="Igbo"/>
			<enumeration value="Indonesian"/>
			<enumeration value="Interlingua"/>
			<enumeration value="Interlingue"/>
			<enumeration value="Inuktitut"/>
			<enumeration value="Inupiaq"/>
			<enumeration value="Irish"/>
			<enumeration value="Italian"/>
			<enumeration value="Japanese"/>
			<enumeration value="Javanese"/>
			<enumeration value="Kalaallisut"/>
			<enumeration value="Kannada"/>
			<enumeration value="Kanuri"/>
			<enumeration value="Kashmiri"/>
			<enumeration value="Kazakh"/>
			<enumeration value="Khmer"/>
			<enumeration value="Kikuyu"/>
			<enumeration value="Kinyarwanda"/>
			<enumeration value="Kirundi"/>
			<enumeration value="Komi"/>
			<enumeration value="Kongo"/>
			<enumeration value="Korean"/>
			<enumeration value="Kurdish"/>
			<enumeration value="Kwanyama"/>
			<enumeration value="Kyrgyz"/>
			<enumeration value="Lao"/>
			<enumeration value="Latin"/>
			<enumeration value="Latvian"/>
			<enumeration value="Limburgish"/>
			<enumeration value="Lingala"/>
			<enumeration value="Lithuanian"/>
			<enumeration value="Luba-Katanga"/>
			<enumeration value="Luxembourgish"/>
			<enumeration value="Macedonian"/>
			<enumeration value="Malagasy"/>
			<enumeration value="Malay"/>
			<enumeration value="Malayalam"/>
			<enumeration value="Maltese"/>
			<enumeration value="Manx"/>
			<enumeration value="Māori"/>
			<enumeration value="Marathi"/>
			<enumeration value="Marshallese"/>
			<enumeration value="Mongolian"/>
			<enumeration value="Nauru"/>
			<enumeration value="Navajo"/>
			<enumeration value="Ndonga"/>
			<enumeration value="Nepali"/>
			<enumeration value="North Ndebele"/>
			<enumeration value="Northern Sami"/>
			<enumeration value="Norwegian"/>
			<enumeration value="Norwegian Bokmål"/>
			<enumeration value="Norwegian Nynorsk"/>
			<enumeration value="Nuosu"/>
			<enumeration value="Occitan"/>
			<enumeration value="Ojibwe"/>
			<enumeration value="Old Church Slavonic"/>
			<enumeration value="Oriya"/>
			<enumeration value="Oromo"/>
			<enumeration value="Ossetian"/>
			<enumeration value="Pāli"/>
			<enumeration value="Panjabi"/>
			<enumeration value="Pashto"/>
			<enumeration value="Persian"/>
			<enumeration value="Polish"/>
			<enumeration value="Portuguese"/>
			<enumeration value="Punjabi"/>
			<enumeration value="Quechua"/>
			<enumeration value="Romanian"/>
			<enumeration value="Romansh"/>
			<enumeration value="Russian"/>
			<enumeration value="Samoan"/>
			<enumeration value="Sango"/>
			<enumeration value="Sanskrit"/>
			<enumeration value="Sardinian"/>
			<enumeration value="Serbian"/>
			<enumeration value="Shona"/>
			<enumeration value="Sindhi"/>
			<enumeration value="Sinhala"/>
			<enumeration value="Slovak"/>
			<enumeration value="Slovene"/>
			<enumeration value="Somali"/>
			<enumeration value="South Ndebele"/>
			<enumeration value="Southern Sotho"/>
			<enumeration value="Spanish"/>
			<enumeration value="Sundanese"/>
			<enumeration value="Swahili"/>
			<enumeration value="Swati"/>
			<enumeration value="Swedish"/>
			<enumeration value="Tagalog"/>
			<enumeration value="Tahitian"/>
			<enumeration value="Tajik"/>
			<enumeration value="Tamil"/>
			<enumeration value="Tatar"/>
			<enumeration value="Telugu"/>
			<enumeration value="Thai"/>
			<enumeration value="Tibetan"/>
			<enumeration value="Tigrinya"/>
			<enumeration value="Tonga"/>
			<enumeration value="Tsonga"/>
			<enumeration value="Tswana"/>
			<enumeration value="Turkish"/>
			<enumeration value="Turkmen"/>
			<enumeration value="Twi"/>
			<enumeration value="Uighur"/>
			<enumeration value="Ukrainian"/>
			<enumeration value="Urdu"/>
			<enumeration value="Uzbek"/>
			<enumeration value="Venda"/>
			<enumeration value="Vietnamese"/>
			<enumeration value="Volapük"/>
			<enumeration value="Walloon"/>
			<enumeration value="Welsh"/>
			<enumeration value="Western Frisian"/>
			<enumeration value="Wolof"/>
			<enumeration value="Xhosa"/>
			<enumeration value="Yiddish"/>
			<enumeration value="Yoruba"/>
			<enumeration value="Zhuang"/>
			<enumeration value="Zulu"/>
			<enumeration value="other"/>
		</restriction>
	</simpleType>
	<simpleType name="ScriptSimpleType">
		<annotation>
			<documentation>iso15924 2016-07-14</documentation>
		</annotation>
		<restriction base="string">
			<enumeration value="Adlm - Adlam"/>
			<enumeration value="Afak - Afaka"/>
			<enumeration value="Aghb - Caucasian Albanian"/>
			<enumeration value="Ahom - Ahom, Tai Ahom"/>
			<enumeration value="Arab - Arabic"/>
			<enumeration value="Aran - Arabic (Nastaliq variant)"/>
			<enumeration value="Armi - Imperial Aramaic"/>
			<enumeration value="Armn - Armenian"/>
			<enumeration value="Avst - Avestan"/>
			<enumeration value="Bali - Balinese"/>
			<enumeration value="Bamu - Bamum"/>
			<enumeration value="Bass - Bassa Vah"/>
			<enumeration value="Batk - Batak"/>
			<enumeration value="Beng - Bengali"/>
			<enumeration value="Bhks - Bhaiksuki"/>
			<enumeration value="Blis - Blissymbols"/>
			<enumeration value="Bopo - Bopomofo"/>
			<enumeration value="Brah - Brahmi"/>
			<enumeration value="Brai - Braille"/>
			<enumeration value="Bugi - Buginese"/>
			<enumeration value="Buhd - Buhid"/>
			<enumeration value="Cakm - Chakma"/>
			<enumeration value="Cans - Unified Canadian Aboriginal Syllabics"/>
			<enumeration value="Cari - Carian"/>
			<enumeration value="Cham - Cham"/>
			<enumeration value="Cher - Cherokee"/>
			<enumeration value="Cirt - Cirth"/>
			<enumeration value="Copt - Coptic"/>
			<enumeration value="Cprt - Cypriot"/>
			<enumeration value="Cyrl - Cyrillic"/>
			<enumeration value="Cyrs - Cyrillic (Old Church Slavonic variant)"/>
			<enumeration value="Deva - Devanagari (Nagari)"/>
			<enumeration value="Dsrt - Deseret (Mormon)"/>
			<enumeration value="Dupl - Duployan shorthand, Duployan stenography"/>
			<enumeration value="Egyd - Egyptian demotic"/>
			<enumeration value="Egyh - Egyptian hieratic"/>
			<enumeration value="Egyp - Egyptian hieroglyphs"/>
			<enumeration value="Elba - Elbasan"/>
			<enumeration value="Ethi - Ethiopic"/>
			<enumeration value="Geok - Khutsuri (Asomtavruli and Nuskhuri)"/>
			<enumeration value="Geor - Georgian (Mkhedruli)"/>
			<enumeration value="Glag - Glagolitic"/>
			<enumeration value="Goth - Gothic"/>
			<enumeration value="Gran - Grantha"/>
			<enumeration value="Grek - Greek"/>
			<enumeration value="Gujr - Gujarati"/>
			<enumeration value="Guru - Gurmukhi"/>
			<enumeration value="Hanb - Han with Bopomofo"/>
			<enumeration value="Hang - Hangul"/>
			<enumeration value="Hani - Han (Hanzi, Kanji, Hanja)"/>
			<enumeration value="Hano - Hanunoo (Hanunóo)"/>
			<enumeration value="Hans - Han (Simplified variant)"/>
			<enumeration value="Hant - Han (Traditional variant)"/>
			<enumeration value="Hatr - Hatran"/>
			<enumeration value="Hebr - Hebrew"/>
			<enumeration value="Hira - Hiragana"/>
			<enumeration value="Hluw - Anatolian Hieroglyphs"/>
			<enumeration value="Hmng - Pahawh Hmong"/>
			<enumeration value="Hrkt - Japanese syllabaries"/>
			<enumeration value="Hung - Old Hungarian (Hungarian Runic)"/>
			<enumeration value="Inds - Indus (Harappan)"/>
			<enumeration value="Ital - Old Italic (Etruscan, Oscan etc.)"/>
			<enumeration value="Jamo - Jamo"/>
			<enumeration value="Java - Javanese"/>
			<enumeration value="Jpan - Japanese"/>
			<enumeration value="Jurc - Jurchen"/>
			<enumeration value="Kali - Kayah Li"/>
			<enumeration value="Kana - Katakana"/>
			<enumeration value="Khar - Kharoshthi"/>
			<enumeration value="Khmr - Khmer"/>
			<enumeration value="Khoj - Khojki"/>
			<enumeration value="Kitl - Khitan large script"/>
			<enumeration value="Kits - Khitan small script"/>
			<enumeration value="Knda - Kannada"/>
			<enumeration value="Kore - Korean (alias for Hangul + Han)"/>
			<enumeration value="Kpel - Kpelle"/>
			<enumeration value="Kthi - Kaithi"/>
			<enumeration value="Lana - Tai Tham (Lanna)"/>
			<enumeration value="Laoo - Lao"/>
			<enumeration value="Latf - Latin (Fraktur variant)"/>
			<enumeration value="Latg - Latin (Gaelic variant)"/>
			<enumeration value="Latn - Latin"/>
			<enumeration value="Leke - Leke"/>
			<enumeration value="Lepc - Lepcha (Róng)"/>
			<enumeration value="Limb - Limbu"/>
			<enumeration value="Lina - Linear A"/>
			<enumeration value="Linb - Linear B"/>
			<enumeration value="Lisu - Lisu (Fraser)"/>
			<enumeration value="Loma - Loma"/>
			<enumeration value="Lyci - Lycian"/>
			<enumeration value="Lydi - Lydian"/>
			<enumeration value="Mahj - Mahajani"/>
			<enumeration value="Mand - Mandaic, Mandaean"/>
			<enumeration value="Mani - Manichaean"/>
			<enumeration value="Marc - Marchen"/>
			<enumeration value="Maya - Mayan hieroglyphs"/>
			<enumeration value="Mend - Mende Kikakui"/>
			<enumeration value="Merc - Meroitic Cursive"/>
			<enumeration value="Mero - Meroitic Hieroglyphs"/>
			<enumeration value="Mlym - Malayalam"/>
			<enumeration value="Modi - Modi, Moḍī"/>
			<enumeration value="Mong - Mongolian"/>
			<enumeration value="Moon - Moon (Moon code, Moon script, Moon type)"/>
			<enumeration value="Mroo - Mro, Mru"/>
			<enumeration value="Mtei - Meitei Mayek (Meithei, Meetei)"/>
			<enumeration value="Mult - Multani"/>
			<enumeration value="Mymr - Myanmar (Burmese)"/>
			<enumeration value="Narb - Old North Arabian (Ancient North Arabian)"/>
			<enumeration value="Nbat - Nabataean"/>
			<enumeration value="Newa - Newa, Newar, Newari"/>
			<enumeration value="Nkgb - Nakhi Geba"/>
			<enumeration value="Nkoo - N’Ko"/>
			<enumeration value="Nshu - Nüshu"/>
			<enumeration value="Ogam - Ogham"/>
			<enumeration value="Olck - Ol Chiki (Ol Cemet’, Ol, Santali)"/>
			<enumeration value="Orkh - Old Turkic, Orkhon Runic"/>
			<enumeration value="Orya - Oriya"/>
			<enumeration value="Osge - Osage"/>
			<enumeration value="Osma - Osmanya"/>
			<enumeration value="Palm - Palmyrene"/>
			<enumeration value="Pauc - Pau Cin Hau"/>
			<enumeration value="Perm - Old Permic"/>
			<enumeration value="Phag - Phags-pa"/>
			<enumeration value="Phli - Inscriptional Pahlavi"/>
			<enumeration value="Phlp - Psalter Pahlavi"/>
			<enumeration value="Phlv - Book Pahlavi"/>
			<enumeration value="Phnx - Phoenician"/>
			<enumeration value="Piqd - Klingon (KLI pIqaD)"/>
			<enumeration value="Plrd - Miao (Pollard)"/>
			<enumeration value="Prti - Inscriptional Parthian"/>
			<enumeration value="Rjng - Rejang (Redjang, Kaganga)"/>
			<enumeration value="Roro - Rongorongo"/>
			<enumeration value="Runr - Runic"/>
			<enumeration value="Samr - Samaritan"/>
			<enumeration value="Sara - Sarati"/>
			<enumeration value="Sarb - Old South Arabian"/>
			<enumeration value="Saur - Saurashtra"/>
			<enumeration value="Sgnw - SignWriting"/>
			<enumeration value="Shaw - Shavian (Shaw)"/>
			<enumeration value="Shrd - Sharada, Śāradā"/>
			<enumeration value="Sidd - Siddham"/>
			<enumeration value="Sind - Khudawadi, Sindhi"/>
			<enumeration value="Sinh - Sinhala"/>
			<enumeration value="Sora - Sora Sompeng"/>
			<enumeration value="Sund - Sundanese"/>
			<enumeration value="Sylo - Syloti Nagri"/>
			<enumeration value="Syrc - Syriac"/>
			<enumeration value="Syre - Syriac (Estrangelo variant)"/>
			<enumeration value="Syrj - Syriac (Western variant)"/>
			<enumeration value="Syrn - Syriac (Eastern variant)"/>
			<enumeration value="Tagb - Tagbanwa"/>
			<enumeration value="Takr - Takri"/>
			<enumeration value="Tale - Tai Le"/>
			<enumeration value="Talu - New Tai Lue"/>
			<enumeration value="Taml - Tamil"/>
			<enumeration value="Tang - Tangut"/>
			<enumeration value="Tavt - Tai Viet"/>
			<enumeration value="Telu - Telugu"/>
			<enumeration value="Teng - Tengwar"/>
			<enumeration value="Tfng - Tifinagh (Berber)"/>
			<enumeration value="Tglg - Tagalog (Baybayin, Alibata)"/>
			<enumeration value="Thaa - Thaana"/>
			<enumeration value="Thai - Thai"/>
			<enumeration value="Tibt - Tibetan"/>
			<enumeration value="Tirh - Tirhuta"/>
			<enumeration value="Ugar - Ugaritic"/>
			<enumeration value="Vaii - Vai"/>
			<enumeration value="Visp - Visible Speech"/>
			<enumeration value="Wara - Warang Citi (Varang Kshiti)"/>
			<enumeration value="Wole - Woleai"/>
			<enumeration value="Xpeo - Old Persian"/>
			<enumeration value="Xsux - Cuneiform, Sumero-Akkadian"/>
			<enumeration value="Yiii - Yi"/>
			<enumeration value="Zinh - Code for inherited script"/>
			<enumeration value="Zmth - Mathematical notation"/>
			<enumeration value="Zsye - Symbols (Emoji variant)"/>
			<enumeration value="Zsym - Symbols"/>
			<enumeration value="Zxxx - Code for unwritten documents"/>
			<enumeration value="Zyyy - Code for undetermined script"/>
			<enumeration value="Zzzz - Code for uncoded script"/>
			<enumeration value="other"/>
		</restriction>
	</simpleType>
	<simpleType name="ColourDepthSimpleType">
		<restriction base="string">
			<enumeration value="bilevel"/>
			<enumeration value="greyscale"/>
			<enumeration value="colour"/>
			<enumeration value="other"/>
		</restriction>
	</simpleType>
	<simpleType name="GraphicsTypeSimpleType">
		<restriction base="string">
			<enumeration value="logo"/>
			<enumeration value="letterhead"/>
			<enumeration value="decoration"/>
			<enumeration value="frame"/>
			<enumeration value="handwritten-annotation"/>
			<enumeration value="stamp"/>
			<enumeration value="signature"/>
			<enumeration value="barcode"/>
			<enumeration value="paper-grow"/>
			<enumeration value="punch-hole"/>
			<enumeration value="other"/>
		</restriction>
	</simpleType>
	<simpleType name="ChartTypeSimpleType">
		<restriction base="string">
			<enumeration value="bar"/>
			<enumeration value="line"/>
			<enumeration value="pie"/>
			<enumeration value="scatter"/>
			<enumeration value="surface"/>
			<enumeration value="other"/>
		</restriction>
	</simpleType>
	<complexType name="LayersType">
		<annotation>
			<documentation>
			Can be used to express the z-index of overlapping
			regions. An element with a greater z-index is always in
			front of another element with lower z-index.
			</documentation>
		</annotation>
		<sequence minOccurs="1" maxOccurs="unbounded">
			<element name="Layer" type="pc:LayerType"></element>
		</sequence>
	</complexType>

	<complexType name="LayerType">
		<sequence minOccurs="1" maxOccurs="unbounded">
			<element name="RegionRef" type="pc:RegionRefType"/>
		</sequence>
		<attribute name="id" type="ID" use="required"/>
		<attribute name="zIndex" type="int" use="required"/>
		<attribute name="caption" type="string"/>
	</complexType>

	<complexType name="BaselineType">
		<attribute name="points" type="pc:PointsType"
			   use="required">
		</attribute>
		<attribute name="conf" type="pc:ConfSimpleType">
			<annotation>
				<documentation>Confidence value (between 0 and 1)</documentation>
			</annotation>
		</attribute>
	</complexType>

	<simpleType name="PointsType">
		<annotation>
			<documentation>
			Point list with format "x1,y1 x2,y2 ...", where
			"x" / "y" refer to the horizontal / vertical
			pixel positions in a coordinate system which always
			references the root PageType/@imageFilename, with
			"0,0" in the upper left corner of the root image and
			"imageWidth,imageHeight" in the lower right.</documentation>
		</annotation>
		<restriction base="string">
			<pattern value="([0-9]+,[0-9]+ )+([0-9]+,[0-9]+)"></pattern>
		</restriction>
	</simpleType>

	<complexType name="RelationsType">
		<annotation>
			<documentation>
			Container for one-to-one relations between layout
			objects (for example: DropCap - paragraph, caption -
			image).
			</documentation>
		</annotation>
		<sequence minOccurs="1" maxOccurs="unbounded">
			<element name="Relation" type="pc:RelationType"/>
		</sequence>
	</complexType>

	<complexType name="RelationType">
		<annotation>
			<documentation>
			One-to-one relation between to layout object. Use 'link'
			for loose relations and 'join' for strong relations
			(where something is fragmented for instance).
			
			Examples for 'link': caption - image floating -
			paragraph paragraph - paragraph (when a paragraph is
			split across columns and the last word of the first
			paragraph DOES NOT continue in the second paragraph)
			drop-cap - paragraph (when the drop-cap is a whole word)
			
			Examples for 'join': word - word (separated word at the
			end of a line) drop-cap - paragraph (when the drop-cap
			is not a whole word) paragraph - paragraph (when a
			pragraph is split across columns and the last word of
			the first paragraph DOES continue in the second
			paragraph)
			</documentation>
		</annotation>
		<sequence>
	    		<element name="Labels" type="pc:LabelsType"
				 minOccurs="0" maxOccurs="unbounded">
				<annotation>
					<documentation>Semantic labels / tags</documentation>
				</annotation>
			</element>
			<element name="SourceRegionRef" type="pc:RegionRefType"
				 minOccurs="1" maxOccurs="1">
			</element>
			<element name="TargetRegionRef" type="pc:RegionRefType"
				 minOccurs="1" maxOccurs="1">
			</element>
		</sequence>
		<attribute name="id" type="ID" use="required"/>
		<attribute name="type">
			<simpleType>
				<restriction base="string">
					<enumeration value="link"/>
					<enumeration value="join"/>
				</restriction>
			</simpleType>
		</attribute>
		<attribute name="custom" type="string">
			<annotation>
				<documentation>For generic use</documentation>
			</annotation>
		</attribute>
		<attribute name="comments" type="string"/>
	</complexType>

	<simpleType name="ProductionSimpleType">
		<annotation>
			<documentation>Text production type</documentation>
		</annotation>
		<restriction base="string">
			<enumeration value="printed"/>
			<enumeration value="typewritten"/>
			<enumeration value="handwritten-cursive"/>
			<enumeration value="handwritten-printscript"/>
			<enumeration value="medieval-manuscript"/>
			<enumeration value="other"/>
		</restriction>
	</simpleType>

	<complexType name="TextStyleType">
		<annotation>
			<documentation>
			Monospace (fixed-pitch, non-proportional) or
			proportional font.
			</documentation>
		</annotation>
		<attribute name="fontFamily" type="string">
			<annotation>
				<documentation>
				For instance: Arial, Times New Roman.
				Add more information if necessary
				(e.g. blackletter, antiqua).
				</documentation>
			</annotation>
		</attribute>
		<attribute name="serif" type="boolean">
			<annotation>
				<documentation>
				Serif or sans-serif typeface.
				</documentation>
			</annotation>
		</attribute>
		<attribute name="monospace" type="boolean"/>
		<attribute name="fontSize" type="float">
			<annotation>
				<documentation>
				The size of the characters in points.
				</documentation>
			</annotation>
		</attribute>
		<attribute name="xHeight" type="integer">
			<annotation>
				<documentation>
				The x-height or corpus size refers to the distance
				between the baseline and the mean line of
				lower-case letters in a typeface.
				The unit is assumed to be pixels.
				</documentation>
			</annotation>
		</attribute>
		<attribute name="kerning" type="int">
			<annotation>
				<documentation>
				The degree of space (in points) between
				the characters in a string of text.
				</documentation>
			</annotation>
		</attribute>
		<attribute name="textColour" type="pc:ColourSimpleType"/>
		<attribute name="textColourRgb" type="integer">
			<annotation>
				<documentation>
				Text colour in RGB encoded format
				(red value) + (256 x green value) + (65536 x blue value).
				</documentation>
			</annotation>
		</attribute>
		<attribute name="bgColour" type="pc:ColourSimpleType">
			<annotation>
				<documentation>Background colour</documentation>
			</annotation>
		</attribute>
		<attribute name="bgColourRgb" type="integer">
			<annotation>
				<documentation>
				Background colour in RGB encoded format
				(red value) + (256 x green value) + (65536 x blue value).
				</documentation>
			</annotation>
		</attribute>
		<attribute name="reverseVideo" type="boolean">
			<annotation>
				<documentation>
				Specifies whether the colour of the text appears
				reversed against a background colour.
				</documentation>
			</annotation>
		</attribute>
		<attribute name="bold" type="boolean"/>
		<attribute name="italic" type="boolean"/>
		<attribute name="underlined" type="boolean"/>
		<attribute name="underlineStyle"
			type="pc:UnderlineStyleSimpleType" use="optional">
			<annotation>
				<documentation>Line style details if "underlined" is TRUE
				</documentation>
			</annotation>
		</attribute>
		<attribute name="subscript" type="boolean"/>
		<attribute name="superscript" type="boolean"/>
		<attribute name="strikethrough" type="boolean"/>
		<attribute name="smallCaps" type="boolean"/>
		<attribute name="letterSpaced" type="boolean"/>
	</complexType>

	<complexType name="RegionType" abstract="true">
		<sequence>
			<element name="AlternativeImage" type="pc:AlternativeImageType"
				 minOccurs="0" maxOccurs="unbounded">
				<annotation>
					<documentation>
					Alternative region images
					(e.g. black-and-white).
					</documentation>
				</annotation>
			</element>
			<element name="Coords" type="pc:CoordsType"/>
			<element name="UserDefined" type="pc:UserDefinedType"
				 minOccurs="0" maxOccurs="1">
			</element>
			<element name="Labels" type="pc:LabelsType"
				 minOccurs="0" maxOccurs="unbounded">
				<annotation>
					<documentation>Semantic labels / tags</documentation>
				</annotation>
			</element>    		
			<element name="Roles" type="pc:RolesType"
				 minOccurs="0" maxOccurs="1">
				<annotation>
					<documentation>
					Roles the region takes
					(e.g. in context of a parent region).
					</documentation>
				</annotation>
			</element>
			<choice minOccurs="0" maxOccurs="unbounded">
				<element name="TextRegion" type="pc:TextRegionType"/>
				<element name="ImageRegion" type="pc:ImageRegionType"/>
				<element name="LineDrawingRegion" type="pc:LineDrawingRegionType"/>
				<element name="GraphicRegion" type="pc:GraphicRegionType"/>
				<element name="TableRegion" type="pc:TableRegionType"/>
				<element name="ChartRegion" type="pc:ChartRegionType"/>
				<element name="SeparatorRegion" type="pc:SeparatorRegionType"/>
				<element name="MapRegion" type="pc:MapRegionType"/>
				<element name="MathsRegion" type="pc:MathsRegionType"/>
				<element name="ChemRegion" type="pc:ChemRegionType"/>
				<element name="MusicRegion" type="pc:MusicRegionType"/>
				<element name="AdvertRegion" type="pc:AdvertRegionType"/>
				<element name="NoiseRegion" type="pc:NoiseRegionType"/>
				<element name="UnknownRegion" type="pc:UnknownRegionType"/>
				<element name="CustomRegion" type="pc:CustomRegionType"/>
			</choice>
		</sequence>
		<attribute name="id" type="ID" use="required"/>
		<attribute name="custom" type="string">
			<annotation>
				<documentation>For generic use</documentation>
			</annotation>
		</attribute>
		<attribute name="comments" type="string"/>
		<attribute name="continuation" type="boolean">
			<annotation>
				<documentation>
				Is this region a continuation of another region
				(in previous column or page, for example)?
				</documentation>
			</annotation>
		</attribute>
	</complexType>

	<complexType name="AlternativeImageType">
		<attribute name="filename" type="string" use="required"/>
		<attribute name="comments" type="string"/>
		<attribute name="conf" type="pc:ConfSimpleType">
			<annotation>
				<documentation>Confidence value (between 0 and 1)</documentation>
			</annotation>
		</attribute>
	</complexType>

	<simpleType name="AlignSimpleType">
		<restriction base="string">
			<enumeration value="left"/>
			<enumeration value="centre"/>
			<enumeration value="right"/>
			<enumeration value="justify"/>
		</restriction>
	</simpleType>
	<simpleType name="GroupTypeSimpleType">
		<restriction base="string">
			<enumeration value="paragraph"/>
			<enumeration value="list"/>
			<enumeration value="list-item"/>
			<enumeration value="figure"/>
			<enumeration value="article"/>
			<enumeration value="div"/>
			<enumeration value="other"/>
		</restriction>
	</simpleType>
	<simpleType name="TextDataTypeSimpleType">
		<restriction base="string">
			<enumeration value="xsd:decimal">
				<annotation>
					<documentation>
					Examples:
					"123.456", "+1234.456",
					"-1234.456", "-.456", "-456"
					</documentation>
				</annotation>
			</enumeration>
			<enumeration value="xsd:float">
				<annotation>
					<documentation>
					Examples:
					"123.456", "+1234.456", "-1.2344e56",
					"-.45E-6", "INF", "-INF", "NaN"
					</documentation>
				</annotation>
			</enumeration>
			<enumeration value="xsd:integer">
				<annotation>
					<documentation>
					Examples:
					"123456", "+00000012", "-1", "-456"
					</documentation>
				</annotation>
			</enumeration>
			<enumeration value="xsd:boolean">
				<annotation>
					<documentation>
					Examples: "true", "false", "1", "0"
					</documentation>
				</annotation>
			</enumeration>
			<enumeration value="xsd:date">
				<annotation>
					<documentation>
					Examples:
					"2001-10-26", "2001-10-26+02:00",
					"2001-10-26Z", "2001-10-26+00:00",
					"-2001-10-26", "-20000-04-01"
					</documentation>
				</annotation>
			</enumeration>
			<enumeration value="xsd:time">
				<annotation>
					<documentation>
					Examples:
					"21:32:52", "21:32:52+02:00", "19:32:52Z",
					"19:32:52+00:00", "21:32:52.12679"
					</documentation>
				</annotation>
			</enumeration>
			<enumeration value="xsd:dateTime">
				<annotation>
					<documentation>
					Examples:
					"2001-10-26T21:32:52", "2001-10-26T21:32:52+02:00",
					"2001-10-26T19:32:52Z", "2001-10-26T19:32:52+00:00",
					"-2001-10-26T21:32:52", "2001-10-26T21:32:52.12679"
					</documentation>
				</annotation>
			</enumeration>
			<enumeration value="xsd:string">
				<annotation>
					<documentation>Generic text string</documentation>
				</annotation>
			</enumeration>
			<enumeration value="other">
				<annotation>
					<documentation>
					An XSD type that is not listed or a custom type
					(use dataTypeDetails attribute).
					</documentation>
				</annotation>
			</enumeration>
		</restriction>
	</simpleType>
	<complexType name="GraphemesType">
		<annotation>
			<documentation>
			Container for graphemes, grapheme groups and
			non-printing characters.
			</documentation>
		</annotation>
		<choice minOccurs="1" maxOccurs="unbounded">
			<element name="Grapheme" type="pc:GraphemeType"/>
			<element name="NonPrintingChar" type="pc:NonPrintingCharType"/>
			<element name="GraphemeGroup" type="pc:GraphemeGroupType"/>
		</choice>
	</complexType>
	<complexType name="GraphemeBaseType" abstract="true">
		<annotation>
			<documentation>
			Base type for graphemes, grapheme groups and non-printing characters.
			</documentation>
		</annotation>
		<sequence>
			<element name="TextEquiv" type="pc:TextEquivType"
				 minOccurs="0" maxOccurs="unbounded"/>
		</sequence>
		<attribute name="id" type="ID" use="required"/>
		<attribute name="index" use="required">
			<annotation>
				<documentation>
				Order index of grapheme, group, or non-printing character
				within the parent container (graphemes or glyph or grapheme group).
				</documentation>
			</annotation>
			<simpleType>
				<restriction base="int">
					<minInclusive value="0"></minInclusive>
				</restriction>
			</simpleType>
		</attribute>
		<attribute name="ligature" type="boolean"/>
		<attribute name="charType">
			<annotation>
				<documentation>
				Type of character represented by the
				grapheme, group, or non-printing character element.
				</documentation>
			</annotation>
			<simpleType>
				<restriction base="string">
					<enumeration value="base"/>
					<enumeration value="combining"/>
				</restriction>
			</simpleType>
		</attribute>
		<attribute name="custom" type="string">
			<annotation>
				<documentation>For generic use</documentation>
			</annotation>
		</attribute>
		<attribute name="comments" type="string">
			<annotation>
				<documentation>For generic use</documentation>
			</annotation>
		</attribute>
	</complexType>
	<complexType name="GraphemeType">
		<annotation>
			<documentation>
			Represents a sub-element of a glyph.
			Smallest graphical unit that can be
			assigned a Unicode code point.
			</documentation>
		</annotation>
		<complexContent>
			<extension base="pc:GraphemeBaseType">
				<sequence>
					<element name="Coords" type="pc:CoordsType"/>
				</sequence>
			</extension>
		</complexContent>
	</complexType>
	<complexType name="NonPrintingCharType">
		<annotation>
			<documentation>
			  A glyph component without visual representation
			  but with Unicode code point.
			  Non-visual / non-printing / control character.
			  Part of grapheme container (of glyph) or grapheme sub group.
			</documentation>
		</annotation>
		<complexContent>
			<extension base="pc:GraphemeBaseType">
			</extension>
		</complexContent>
	</complexType>
	<complexType name="GraphemeGroupType">
		<complexContent>
			<extension base="pc:GraphemeBaseType">
				<choice minOccurs="0" maxOccurs="unbounded">
					<element name="Grapheme" type="pc:GraphemeType"/>
					<element name="NonPrintingChar" type="pc:NonPrintingCharType"/>
				</choice>
			</extension>
		</complexContent>
	</complexType>

	<complexType name="UserDefinedType">
		<annotation>
			<documentation>Container for user-defined attributes</documentation>
		</annotation>
		<sequence>
			<element name="UserAttribute" type="pc:UserAttributeType"
				 minOccurs="1" maxOccurs="unbounded">
			</element>
		</sequence>
	</complexType>
	<complexType name="UserAttributeType">
		<annotation>
			<documentation>Structured custom data defined by name, type and value.</documentation>
		</annotation>
		<attribute name="name" type="string"/>
		<attribute name="description" type="string"/>
		<attribute name="type">
			<simpleType>
				<restriction base="string">
					<enumeration value="xsd:string"/>
					<enumeration value="xsd:integer"/>
					<enumeration value="xsd:boolean"/>
					<enumeration value="xsd:float"/>
				</restriction>
			</simpleType>
		</attribute>
		<attribute name="value" type="string"/>
	</complexType>

	<complexType name="TableCellRoleType">
		<attribute name="rowIndex" type="int" use="required">
			<annotation>
				<documentation>Cell position in table starting with row 0</documentation>
			</annotation>
		</attribute>
		<attribute name="columnIndex" type="int" use="required">
			<annotation>
				<documentation>Cell position in table starting with column 0</documentation>
			</annotation>
		</attribute>
		<attribute name="rowSpan" type="int">
			<annotation>
				<documentation>Number of rows the cell spans (optional; default is 1)</documentation>
			</annotation>
		</attribute>
		<attribute name="colSpan" type="int">
			<annotation>
				<documentation>Number of columns the cell spans (optional; default is 1)</documentation>
			</annotation>
		</attribute>
		<attribute name="header" type="boolean">
			<annotation>
				<documentation>
				Is the cell a column or row header?
				</documentation>
			</annotation>
		</attribute>    	
	</complexType>
	<complexType name="RolesType">
		<sequence>
			<element name="TableCellRole" type="pc:TableCellRoleType"
				 minOccurs="0" maxOccurs="1">
				<annotation>
					<documentation>
					Data for a region that takes on the role
					of a table cell within a parent table region.
					</documentation>
				</annotation>
			</element>
		</sequence>
	</complexType>
	<simpleType name="UnderlineStyleSimpleType">
		<restriction base="string">
			<enumeration value="singleLine" />
			<enumeration value="doubleLine" />
			<enumeration value="other" />
		</restriction>
	</simpleType>
</schema>