Common abbreviation for [incr Tcl], one popular object oriented extension for [Tcl]. [DGP] That's not actually correct. ''Itcl'' is not an abbrevation. It is the true name of the package, as in: % package require Itcl 3.3 [[incr Tcl]] is a longer, more entertaining name that people use to refer to the same same bit of code, but the name of the package is ''Itcl''. ---- [Category Glossary]