I am trying to run an rsh command from a tcl button.  The following
code returns a ksh error on export DISPLAY=windhorse:0.  How does
one do this with TCL?

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set id 0

.. stuff deleted...

button .b$id -text Netscape -command "exec rsh whatever 'DISPLAY=windhorse:0; export DISPLAY; /usr/sww/bin/netscape'"
pack .b$id -fill x
incr id
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Mark