See also the related pseudo-variable % ERRORLEVEL % under DR - DOS and the IF ERRORLEVEL command .
Under Multiuser DOS , this is a true environment variable automatically updated by the shell to the return code of exiting programs .
See also the related pseudo-variable % ERRORLEVEL % under environment variable     and the IF ERRORLEVEL command .
Under Multiuser DOS , this is a true environment variable automatically updated by the shell to the return code of exiting programs .