Lots of new stuff for "module synopsis support." Public interface consists of three macros, one which replaces some of the current conventions used in the module sections: \declaremodule: Requires two parameters: module type (standard, builtin, extension), and the module name. An optional parameter should be given as the basis for the module's "key" used for linking to or referencing the section. The "key" should only be given if the module's name contains underscores, and should be the name with the underscore's stripped. This should be the first thing after the \section used to introduce the module. \modulesynopsis: Requires a single parameter: a short, one-liner description of the module that can be used as part of the chapter introduction. This should probably be placed just after the \declaremodule, but may be placed anywhere in the same section. \localmoduletable: No parameters. If a .syn file exists for the current chapter (or for the entire document in howto docs), a synopsistable is created with the contents loaded from the .syn file. Some re-organization due to module synopsis support. Some \def's changed to \newcommand's.