While I applaud your post, your models do not yet identify what a "wiki" //is//. The model also states that a page contains only sections -- that needs some refinement.

I think a "wiki" is a collection of articles and documents, a document itself being a collection of articles. (Incidentally I prefer "story" to "article" so as to distinguish from grammatical and other uses of "article" and it gives a clear path to tie into emerging argumentation models.)

A wiki "story" then is composed of one or more pages.  I then look to XSL for the definition of a page, which divides rendition into repeatable header/footer areas & a body area.  (In this regard, you can use "heading" or "caption" in the manner that you now seem to use for "header"). A "subpage" is another matter altogether, for its existence is functionally dependent on that of a superordinate page; a subpage often has overflow content from its superpage but it could be an earlier version of the superpage; in other words, a subpage contains material that is effectively attached to another page.

A wiki page is a container for content which, because a single story can be spread across multiple pages, means a single page may contain only //part of// a story. Page content can be of many varieties, e.g., paragraphs, tables, and lists. Many documents contain **titled and sequentially-numbered sets of paragraphs & subsections** which we both would call a "section" (as XHTML 2.0 does). 

A document is often divided into front-matter, body, and back-matter; I don't believe that a story is similarly divided. Thus the body of a page for a story within a document may be the container for content that is part of one of these three document divisions.

Some of these concepts are perhaps better represented in a 'semantic page structure' as follows:

| **legend:** |  :: //is-a//    | : //has-a//
wiki         : document* story*
document     : story+ division+
division     :: frontmatter | bodymatter | backmatter
division     : story+ block*
story        : page+
page         : layout* subpage* ordinal 
layout       :: header | body | footer | sidebar
layout       : caption? block* column* ordinal 
block        :: division | section | line |
                heading  | graf    | list | hr   |
                table    | preblock| bquote
block        : block* flow* ordinal 
section      : heading? graf* footnote* comment*
heading      : seq_label title
seq_label    : seq_label* sep designation
designation  :: prefix? (number* | letter*) suffix?
list         :: ul | ol | dl | ilist
list         : list_item
list_item    :: ordered_ | unordered_
list_item    : block* flow* ordinal
ordered_     : heading
table        : topcaption? theader? tbody* tfooter? 
               bottomcaption? ordinal 
flow         :: link | em | strong | img | br | ...
                styled_ | annotated_ | inserted_ |
                struck_ | imported_  | calculated_ |
                footnoted_ | redacted_ | queried | ...
flow         : flow* pcdata}}}

-- [[John McClure]]

Inline nowiki and monospace can be totally distinct in Creole (triple-braces for nowiki and double-sharps for monospace).

-- [[YvesPiguet]], 2008-Sep-16