System Parameter

When used as a parameter, for example in the ON ERROR statement, "SYSTEM" displays an error message and causes the system to enter ERROR mode (unless the error is handled elsewhere).

The use of HELP with the ON error statement is somewhat different from the use of other error conditions. When ON HELP SYSTEM is in effect and the <HELP> key is pressed (and not otherwise trapped by an end-of-line HELP condition), Business Rules executes an implied HELP$ call. This HELP$ call accesses the keyword and file name which are named by the BRConfig.sys file's HELPDFLT specification. If HELPDFLT has not been specified, ON HELP SYSTEM operates as ON HELP IGNORE. For additional information, see the Help Facility section.