Adobe Extending Dreamweaver CS4 - Manual (Page 209)

203 EXTENDING DREAMWEAVER CS4
Tag libraries and editors
Tag library file format
A tag library consists of a single root file, the TagLibraries.vtm file that lists every installed tag, plus a VTML file for
each tag in the tag library. The TagLibraries.vtm file functions as a table of contents and contains pointers to each
individual tag’s VTML file. The following figure shows how Dreamweaver organizes the VTML files by markup
language:
Users of Macromedia HomeSite from Adobe can recognize the VTML file structure, but Dreamweaver does not use
VTML files in the same way as HomeSite. The most important difference is that Dreamweaver contains its own HTML
renderer that displays extension user interfaces (UIs), so the Dreamweaver VTML files are not used in the user
interface (UI) rendering process.
The following example illustrates the structure of the TagLibraries.vtm file:
path to TagChooser.xml file" id="DWTagLibrary_html">
tagchooser="cfml/TagChooser.xml" id="DWTagLibrary_cfml">
prefix="