
Cantata(Control)             Khoros              Cantata(Control)

     EXPRESSION Control Structure

     The EXPRESSION is used to evaluate an expression or series
     of expressions at a certain point in the network.  When the
     input connection becomes active, the expression contained in
     the text area labeled "Enter Expression:" is evaluated.  The
     input connection data is then propagated to the output
     filename.  The rest of the network connected to the glyph's
     output connection will then be active for scheduling and
     dispatching.

     The expression glyph provides a convenient way to re-
     initialize variables during a while loop,  initialize vari-
     ables prior to the execution of a network, or set new vari-
     ables at any point in a network.  Special Thanks To:

     Mathew Yeates of NASA (JPL Division) for donating the
     EXPRESSION glyph to cantata.  ~

     Copyright 1991, University of New Mexico. All rights
     reserved.

Khoros                    Release: 1.0                          1

