Itcl - the [incr Tcl] extension

 _____    _____  ____   ______  ____             ___   _____ 
|  __ \  / ____||___ \ |  ____||  _ \     /\    / _ \ | ____|
| |  | || |       __) || |__   | |_) |   /  \  | (_) || |__  
| |  | || |      |__ < |  __|  |  _ <   / /\ \  \__, ||___ \ 
| |__| || |____  ___) || |     | |_) | / ____ \   / /  ___) |
|_____/  \_____||____/ |_|     |____/ /_/    \_\ /_/  |____/