I think the buildings tag has been rendered obsolete by unit-type labels.
Not sure how you specify tags in emanations and effects though. If this is possible, can someone post the syntax?
"Unit-type labels", better known as "tags", don't have their own wiki page (they're simple enough to explain on the
XML/Unit and
XML/Upgrade pages, which I presumed was the only place they were used.
If they can be used in emanations, please do add it, they have a specific page at
GAE/Emanations.
I don't know where the documentation for that might be, as the wiki is being rearranged every time I turn around.
In case you missed it in the general discussion board, the three engine's XML documentations have been merged. No data was removed and much was added, but my
Documenting thread seems to have died before all my questions were answered. If you happen to know any, please feel free to answer, or if you want to see them documented, bump the thread. Most of them are features that were never announced on the board, but I found when combing through Shibboleth.
As for the layout of the wiki, all XMLs can be accessed from the
XMLs page. Since GAE has so many specific features that require more depth in documenting, many have individual pages with stronger documentation (to do: expand those pages not to skip common elements) and examples. A full list of these pages can be found on the
GAE/Features page.