Form calls the user edit routine with the type parameter equal
to U_DELETE when the DELETE key sequence is pushed. The other parameters
are NULL. U_DELETE means that the user wishes to delete the current
record displayed. The user edit routine can inspect the current record using
the sread function and decide if the record should be deleted. If an
error message is returned, the operator will not be able to delete the record.
If the user edit routine is updating balances in other RMSfiles, that should
be done at this time.