"TclTk8.0Manuals.zip" in "POSTBUILD/tcl/" directory contains a HTML version of Tcl/Tk8.0 manuals.

When you unzip this file in "POSTBUILD/tcl/" directory, a sub-directory "doc" will be created.

You will have access to the reference manulas of "Tcl/Tk 8.0" when next time you run Post Builder.

