Clear wsh buffer

[Brent L. Bates AAD/TAB MS361 x42854]

   Does anyone know how to clear a wsh scroll buffer?  I can clear what
is displayed in the window, but can't clear the entire buffer.  I can do
this on a Sun, but can't find a way to do it on a SGI.  I have read the
documentation; the only thing I have found are several ways to clear what
is on the displayed window, but not the whole buffer.
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					Brent