<h2 class="no-num no-toc" id=draft-standard-—-3-october-2009>Draft Standard — 3 October 2009</h2>
<h2 class="no-num no-toc" id=draft-standard-—-4-october-2009>Draft Standard — 4 October 2009</h2>
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<p>When designing new vocabularies, identifiers can be created
either using <a href=#url title=URL>URLs</a>, <a href=#valid-reversed-dns-identifier title="valid
reversed DNS identifier">reversed DNS labels</a>, or, for
properties, as plain words (with no dots or colons). For URLs
properties, as plain words (with no dots or colons). For URLs,
conflicts with other vocabularies can be avoided by only using
identifiers that correspond to pages that the author has control
over. Similarly, for reversed DNS labels conflicts can be avoided by
specified, must have a value that is either:</p>
<ul><li>A <a href=#valid-url>valid URL</a> that is an <a href=#absolute-url>absolute URL</a>
for which the string "<code title="">http://www.w3.org/1999/xhtml/custom#</code>" is not a
for which the string "<code title="">http://www.w3.org/1999/xhtml/microdata#</code>" is not a
<a href=#prefix-match>prefix match</a>, or</li>
<li>A <a href=#valid-reversed-dns-identifier>valid reversed DNS identifier</a>.</li>
<p>Each token must be either:</p>
<ul><li>A <a href=#valid-url>valid URL</a> that is an <a href=#absolute-url>absolute URL</a>
for which the string "<code title="">http://www.w3.org/1999/xhtml/custom#</code>" is not a
for which the string "<code title="">http://www.w3.org/1999/xhtml/microdata#</code>" is not a
<a href=#prefix-match>prefix match</a>, or</li>
<li>A <a href=#valid-reversed-dns-identifier>valid reversed DNS identifier</a>, or</li>
<p>Generate the following triple:</p>
<dl class=triple><dt>subject <dd> <a href="#the-document's-current-address">the document's current address</a>
<a href=#global-identifier>global identifier</a>. Otherwise, let <var title="">subject</var> be a new blank node.</li>
<li><p>Let <var title="">type</var> be the <a href=#item-type>item type</a>
of <var title="">item</var>.</li>
of <var title="">item</var>, or the empty string, if <var title="">item</var> has no <a href=#item-type>item type</a>.</li>
<li><p>If <var title="">type</var> is neither the empty string nor
an <a href=#absolute-url>absolute URL</a>, then let <var title="">type</var> be
the result of concatenating the string "<code title="">http://www.w3.org/1999/xhtml/custom#</code>" with the <var title="">type</var>, with any characters in <var title="">type</var> that are not valid in the <ifragment>
the result of concatenating the string "<code title="">http://www.w3.org/1999/xhtml/microdata#</code>" with the <var title="">type</var>, with any characters in <var title="">type</var> that are not valid in the <ifragment>
production of the IRI syntax being %-escaped.</li>
<li>
<li>
<p>For each name <var title="">name</var> in <var title="">element</var>'s <a href=#property-names>property names</a>, run the
following substeps:</p>
appropriate substeps from the following list:</p>
<ol><!--
<li><p>Otherwise, if <var title="">type</var> is <code
title="md-work">work</code>, and <var title="">name</var> is
equal to the string "<code title="md-work-title">title</code>",
--><li><p><!--Otherwise...--> If <var title="">name</var> is not
an <a href=#absolute-url>absolute URL</a>, then let <var title="">name</var>
be the result of concatenating the string "<code title="">http://www.w3.org/1999/xhtml/custom#</code>" with <var title="">name</var>, with any characters in <var title="">name</var> that are not valid in the <ifragment>
production of the IRI syntax being %-escaped. <a href=#refsRFC3987>[RFC3987]</a></li>
<dl><dt>If <var title="">name</var> is an <a href=#absolute-url>absolute
<dt>If <var title="">name</var> contains neither a U+003A COLON
character (:) nor a U+002E FULL STOP character (.)</dt>
<dd>
<ol><li><p>If <var title="">type</var> is the empty string, then
abort these substeps.</li>
<li><p>Let <var title="">predicate</var> have the same value
as <var title="">type</var>.</li>
<li><p>If <var title="">predicate</var> does not end in a
U+0023 NUMBER SIGN character (#), then append a U+0023 NUMBER
SIGN character (#) to <var title="">predicate</var>.</li>
<li><p>Append the value of <var title="">name</var> to <var title="">predicate</var>, with any characters in <var title="">name</var> that are not valid in the <ifragment>
production of the IRI syntax being %-escaped.</li>
<dt>predicate <dd> the concatenation of the string "<code title="">http://www.w3.org/1999/xhtml/microdata#</code>" and <var title="">predicate</var>, with any characters in <var title="">predicate</var> that are not valid in the <ifragment> production of the IRI syntax being %-escaped <a href=#refsRFC3987>[RFC3987]</a>
<dt>predicate <dd> the concatenation of the string "<code title="">http://www.w3.org/1999/xhtml/microdata#</code>" and <var title="">name</var>, with any characters in <var title="">name</var> that are not valid in the <ifragment> production of the IRI syntax being %-escaped <a href=#refsRFC3987>[RFC3987]</a>
<li><p><!--Otherwise...--> If <var title="">name</var> is not
an <span>absolute URL</span>, then let <var title="">name</var>
be the result of concatenating the string "<code
title="">http://www.w3.org/1999/xhtml/custom#</code>" with <var
title="">name</var>, with any characters in <var
title="">name</var> that are not valid in the <ifragment>
production of the IRI syntax being %-escaped. <a
href="#refsRFC3987">[RFC3987]</a></p></li>
<dt>If <var title="">name</var> is an <span>absolute
URL</span></dt>
<li>
<dd>
<p>Generate the following triple:</p>
<dt>object <dd> <var title="">value</var>
</dl>
</li>
</dd>
</ol>
<dt>If <var title="">name</var> contains neither a U+003A COLON
character (:) nor a U+002E FULL STOP character (.)</dt>
<dd>
<ol>
<li><p>If <var title="">type</var> is the empty string, then
abort these substeps.</p></li>
<li><p>Let <var title="">predicate</var> have the same value
as <var title="">type</var>.</p></li>
<li><p>If <var title="">predicate</var> does not end in a
U+0023 NUMBER SIGN character (#), then append a U+0023 NUMBER
SIGN character (#) to <var title="">predicate</var>.</p></li>
<li><p>Append the value of <var title="">name</var> to <var
title="">predicate</var>, with any characters in <var
title="">name</var> that are not valid in the <ifragment>
production of the IRI syntax being %-escaped.</p></li>
<li>
<p>Generate the following triple:</p>
<dl class="triple">
<dt>subject <dd> <var title="">subject</var>
<dt>predicate <dd> the concatenation of the string "<code title="">http://www.w3.org/1999/xhtml/microdata#</code>" and <var title="">predicate</var>, with any characters in <var title="">predicate</var> that are not valid in the <ifragment> production of the IRI syntax being %-escaped <a href="#refsRFC3987">[RFC3987]</a>
<dt>object <dd> <var title="">value</var>
</dl>
</li>
</ol>
</dd>
<dt>Otherwise</dt>
<dd>
<p>Generate the following triple:</p>
<dl class="triple">
<dt>subject <dd> <var title="">subject</var>
<dt>predicate <dd> the concatenation of the string "<code title="">http://www.w3.org/1999/xhtml/microdata#</code>" and <var title="">name</var>, with any characters in <var title="">name</var> that are not valid in the <ifragment> production of the IRI syntax being %-escaped <a href="#refsRFC3987">[RFC3987]</a>
