;
DEBUG_VARIABLES -- Predefined variables used by DEBUG.
`FAULT_STATUS DEBUG automatically sets its value to the status code of
the most recent fault.
`MAX_ARRAY_DIM controls the maximum number of array dimensions that the
PRINT, ARGS, and EXAMINE commamds display.
`MAX_BAD_CHARS limits the number of unprintable characters that DEBUG
displays when outputting data in ASCII format.
`MAX_QUAL limits the number of qualifiers in a routine-name or
variable-name.
`MAX_STRING_LEN controls the length of a string that the PRINT command
displays.
`MAX_VAR_LEN truncates all but the specifed number of characters in a
variable name.
`SRC_ADJUST sets the minimum number of lines of source code displayed
above and below the current source line.
`SRC_TRY_BAK controls the display of the backup version of a file of
source code.