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The `Glyph' button makes a small icon of the subform which can then
be used to construct a processing pipeline.
The glyphed subform represents only the specific processing routine
that was chosen from the guide pane.  In other words, the glyph does
not represent the entire subform but only a single program which was
accessed by that subform.  This is why the glyph is labeled (bottom)
with the
program name instead of the subform name (for example `vadd' instead 
of `arith_binary').
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GLYPH ICONS AND BITMAPS
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The subform glyph has several icons that act as action buttons.  
The "bomb" (top-left) bitmap deletes or destroys the glyph.  The
"subform" (top-middle) bitmap brings back the subform that the
glyph represents.  The "on/off" (top-right) bitmap 
executes a glyph, or if it is running stops a glyph.
glyph represents.  
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There are two more icons or bitmaps that may appear on a glyph.  If it
is a control glyph, a "reset" (top-middle) bitmap
resets the variables in the glyph.  Remember, there is a global reset
on the top-level workspace.  If the Remote Execution attribute is
enabled, a "network" bitmap will appear in the center of the glyph.
Clicking on this icon or bitmap will pop-up a list of remote machines
that the glyph can be executed on.
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When the glyph fails for any reason, a "unhappy face" bitmap will
appear in the center of the glyph.  Clicking on this icon will pop-up
the error message.
