[SIC\]ON ERROR [Command]
This command changes the current error recovery action. By default, a
PAUSE is automatically generated by any error during execution.
This can be changed and any other valid command line Command can be ac-
tivated instead of PAUSE when an error occurs, using the command ON ER-
ROR Command. A very useful error recovery command for loops is NEXT,
which enables skipping the remaining commands of the loop when something
went wrong, and resumes the loop at for the following index value.
Note that the ON ERROR command does not affect the behaviour on <^C>
trapping, which always returns a PAUSE. The ON ERROR command is only
valid within the procedure which declared it.