.LP
The following example illustrates the use of the expression control 
glyph to set variables during the execution of a network in cantata.
.LP
.DS L
.nf
\f(CW
    ------------          ------------        ------------
    |procedure1|----------|=>      =>|--------|procedure2| 
    |   or     |          |          |        |   or     |
    | network1 |          |          |        | network2 |
    |          |          |expression|        |          |
    ------------          ------------        -----------

	{ open expression glyph, and set variables as desired
	  in the "Enter Expression" parameter box.  These 
	  variables will be set after procedure1 (network1)
	  is executed, and before procedure2 (network2) is 
	  executed }
\fP
.fi
.DE
