Writing Subroutines to Translate LaTeX Commands

For every command \cmdname that is encountered, LaTeX2HTML will use the subroutine &do_cmd_cmdname, if it exists¹. The remainder of the entire segment will be passed to this subroutine as a single string, and the subroutine must return the remainder of this string when it's done.

Footnotes

... exists¹

and of course, if the command hasn't been specified as one to pass to the image file, such as the maths commands