Attempt to find a value associated with a variable from the shared netWorkSpace;
a non-blocking version of
a netWorkSpace class object
name of variable to be found
value to return if xName is not found
nwsFindTry method looks in the shared netWorkSpace
for a value bound to
xName; if it finds such a value,
returns it but does not remove it.
If it does not find a value,
nwsFindTry returns immediately, rather than
blocking as in the case of
the value of argument
defaultVal is returned.
If there is more than one value associated with
particular value returned depends on
xName's behavior. See
nwsDeclare for details.
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