Implement basic page layout elements

[ttasovac]

This is a placeholder from the Lexical Resources Summit.

After much discussion, and in the context of the ongoing work on the TEI Lex-0 Publisher, we agreed that:

• that we need to allow facsimile, pb, cb and lb.
• we need to make absolutely sure in the guidelines that these should be used for aligning with facsimile sources in the context of digital editions, but not for laying out new, born-digital dictionaries
• we need to document properly what to do when breaks occur in the middle of the entry or another dictionary element, and/or in the middle of a single within a dictionary element etc.

[xlhrld]

Related to #4

[daliboris]

We also need to document properly what to do when breaks occur between two entries or divs. If it should be placed between these elements – as the thing itself appears in its nature: the page must start first, followed by the new entry -, or the pb and cb elements must be first child element of divs or entries.

See an example from TEI Guidlines:

 <p>
<!-- ... -->
 </p>
 <pb n="2" facs="page2.png"/>
<!-- similarly, for page 2 -->
 <p>

But I also know that some software (EVT, for example) needs that milestone elements should be always inside the block element with the text content.

[daliboris]

There is also a @break attribute that indicates if pb/cb/lb elements are breaking the word/token or not.

• imp<lb/>erator = two words
• imp<lb break="no"/>erator = one word

I must check if the indexing mechanism in eXist-db or BaseX can handle it, or it's better to use something similar to this (except that the <w> element is not allowed in the TEI Lex-0):

<quote>... sed <w>imp<lb/>erator</w> dixit ... </quote>

[laurentromary]

I think it would be ideal to keep to the tEI mechanism as much as we can.