2
Tcl 2002 – Realizing Windows Look & Feel with Tk
The old window
“ModelSim works a little too intimately with the command line/Transcript window for my taste. 
It's like a grown WinNT child clinging to its UNIX mother's apron strings.  Usually a simple message window is sufficient for a Windows-based program.”
– Customer evaluation, April 1998
Actual quote from a customer evaluating the first Windows release ModelSim using Tk.

Much of the control of the application was performed from the command line and worst yet, many features were Only available from the command line.