Document structure:

lessonset
	section
		unit
			lesson
				vocab
				dialog
					line
						migmaq
						english
						soundfile
						img
				activity
					list
						item
							first
							second

XML Conventions:

<activity>
A game or exercise to practice a lesson.

<designnote>
A note that explains design decisions. Not meant to be displayed.

<dialog>
An ordered set of lines that form a conversation.

<english>
A line of English accompanying a line of Mi'gmaq.

<first>
The first item in a pair in an activity list.

<img>
A picture.

<item>
A pair in a list in an activity.

<lesson>
Teaches or practices topics, dialogues, or vocabulary. Contains a title and may contain explanatory notes, pictures, dialogues, vocabulary sets, and activities.

<lessonset>
Root node that contains everything else. Contains a title and sections.

<line>
A line containing Mi'gmaq, English translation, a soundfile, and (optionally) an image.

<list>
A list of items in an activity.

<m>
A Mi'gmaq word in a note.

<migmaq>
A line of Mi'gmaq.

<note>
Text to introduce or explain content.

<second>
The second item in a pair in an activity list.

<section>
Ordered collection of units at a certain skill level. Contains a title, introduction notes, and units.

<soundfile>
An audio file to go with a line.

<timesig>
Timestamp that notes what audio file contains what lines.

<title>
Title at any level.

<unit>
Collection of lessons arranged around a theme. Contains a title, introduction notes, and lessons.

<vocab>
A set of vocabulary lines.