Want a list of error names?
ECHR EHALT ENILPTR ECASE EOUTOFMEM
ECTSNG ESTLIM EARGV EPACK EUNPACK
EASRT ELLIMIT ETRASHHEAP EPASTEOF EREFINAF
ENOFILE ENAMESIZE EBADINUM EBADFNUM ENUMNTFD
ENAMRNG EFMTSIZE ESEEK ECREATE EREMOVE
EOPEN EREADIT EWRITEIT ESQRT ELN
ERANGE ESUBSC EGOTO ECLOSE EWRITE
ECTLWR ECTUPR
enter an error name
Pointer value out of legal range
Error in "errs"+20 near line 50.
128 statements executed in 0.08 seconds cpu time.