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    Some examples tcl/tk codes     Man of Bwidget     Man of blt     mkwidget screenshots     TkOgl     Video Demo real.

  What does it take to get Tcl to compile under SCO Unix?
 Add a "#undef select" to tkEvent.c, and remove the reference to 
TK_EXCEPTION around line 460 of main.c.

Tk uses its own scheme for allocating the border colors for its 3D
widgets, which causes problems when running TK on a system with
"PseudoColor" display class, and a 16-cell colormap.

If you can`t go to eight bitplanes, you can instead start the server
with a "-static" (Xsco) or "-analog" (Xsight) option, making the
display class become "StaticColor".  This makes the entire colormap
read-only, and it will return the color that most closely maps to the
desired color as possible.

This information is from Keith Amann