http://www.purl.org/tcl/home/man/tcl8.4/TclCmd/subst.htm ---- What's the '''use''' of subst? As [Joe English], who has deep experience, explains, "[[subst]] is massively handy in text-processing applications, especially [SGML] and [XML] down-translators. [[subst]] and [[ [string] map]] make Tcl particularly well-suited for this type of task." ---- [Tcl syntax help] - [Arts and crafts of Tcl-Tk programming] - [Category Command]