doc -- Generate and/or validate documentation

    sak doc ?format? ?module...?

        Convert the documentation for the specified module into the
        given format. Modules can be specified by their plain name, or
        as relative path. The special format 'validate' causes the
        tool to syntax check of the input without generating actual
        output. When output is generated it is written into the
        sub-directory 'doc'/format of the current working directory.

	The format is actually a glob and output is generated for all
	known formats matching it. It is implicitly padded with a * to
	allow the use of prefixes.

        The known output formats (beyond 'validate') are

        - dvi     See latex, + conversion to dvi (via 'latex' application)
        - html    HTML pages
        - latex   LaTeX pages
        - list    A list of manpages
        - nroff   Manpages
        - ps      See dvi, + conversion to PostScript (via 'dvips' application)
        - text    Plain text
        - tmml    TMML (Tcl Manpage Markup Language)
        - wiki    Wiki markup (Tcler's Wiki)