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→Signals and Exceptions
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=== Signals and Exceptions ===
====stop(expr)====
Terminates the current program and writes the result of expression to a file (&errout by default).
====error trapping====
The keyword &error is normally zero, but if set to a positive value, this sets the number of fatal errors that are tolerated and converted to expression failure; the value of &error is decremented if this happens. Therefore the now-common TRY-CATCH behaviour can be written as:
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