What is the best way to open a file with its associated application from TCL?

Question

I have a TCL/TK app on Windows. What is the best way to open a file with its associated program? For example, I am generating a PDF, and I want it to open automatically.

Answer 1

For the records: Using the Tcl extension TWAPI, one might also want to look at:

twapi::shell_execute -path $filename