Are you a TCL expert, if not a Perl expert? What is the TCL code for?

I only ask as I know Perl much better than I know TCL but my last job required the use of TCL to interface with external devices for control as the vendors only supplied TCL libraries for their API. Existing TCL scripts and example TCL scripts were easily expanded for the limited functionality I needed.

For me, it was easier to learn the limited TCL syntax I needed to get the job done than to convert the whole thing into Perl and use a module like Inline::TCL.