XWindows Programming Using Tcl/Tk

["srinivasan ranganathan" <srini_linux@xxxxxxxxxxx>]

Hi all

Can anyone point me to some FREE resources on the Net that i can use to 
learn tcl/tk programming for XWindows? I am a student, so i have only 
limited access to the Net...so a PDF or a ZIP file download will be a help.

Thanx in advance.
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