Predefined TOP variables

Table 4.2:

Name	Type
ARGUMENTS	$\langle{\tt real:0}\rangle$
IO_UNIT	$\langle{\tt integer:1}\rangle$
ID1	$\langle{\tt integer:1}\rangle$
ID2	$\langle{\tt integer:1}\rangle$
NUMBER_PLACES	$\langle{\tt integer:2}\rangle$
FILE_EXISTS	$\langle{\tt integer:1}\rangle$
OUTPUT_CONTROL	$\langle{\tt integer:4}\rangle$
STOP_ON_ERROR	$\langle{\tt integer:1}\rangle$
ERROR_STATUS	$\langle{\tt integer:1}\rangle$
OBJECTS	$\langle{\tt string:0}\rangle$
VARIABLES	$\langle{\tt string:0}\rangle$
ROUTINE	$\langle{\tt string:1}\rangle$
ROOT_NAME	$\langle{\tt string:1}\rangle$
DIRECTORY	$\langle{\tt string:1}\rangle$
FILE_ID	$\langle{\tt string:1}\rangle$
OPERATION	$\langle{\tt string:1}\rangle$
RESULT	$\langle{\tt string:1}\rangle$
STRING_ARGUMENTS	$\langle{\tt string:0}\rangle$
OBJECTS_FILE	$\langle{\tt string:1}\rangle$
INCLUDE_FILE	$\langle{\tt string:1}\rangle$
FILE	$\langle{\tt string:1}\rangle$
RECORD	$\langle{\tt string:1}\rangle$
THEN	$\langle{\tt string:1}\rangle$
ELSE	$\langle{\tt string:1}\rangle$
COMMAND	$\langle{\tt string:1}\rangle$
FILE_EXT	$\langle{\tt string:1}\rangle$
OUTPUT_DIRECTORY	$\langle{\tt string:1}\rangle$
FILE_ACCESS	$\langle{\tt string:1}\rangle$
FILE_STATUS	$\langle{\tt string:1}\rangle$