Used to undefine defined NCL symbols.
- string names of any dimensionality of symbols to be undefined
This function is to be used primarily to undefine functions and procedures although it does
work for variables. undef will remove from the symbol table any references matching the
input. WARNING: once a function, procedure or variable is undefined there is no way to get it
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$Revision: 1.4 $ $Date: 1998/06/15 21:30:37 $