Specifications

552
Handling errors
Statements
ON ERROR GOTO
Enables error trapping.
RESUME
Causes program execution to resume at a speci-
fied location after control is transferred to an error-
handling routine.
Functions
ERL
Returns the current statement location of the pro-
gram where a run-time error occurred.
ERR
Returns the error code of the most recent run-time
error.
Defining and allocating variables
Statements
COMMON
Declares common variables for sharing between
user programs.
CONST
Defines symbolic constants to be replaced with
labels.
DATA Stores numeric and string literals for READ state-
ments.
DECLARE Declares user-defined function FUNCTION or SUB
externally defined.
DEFREG
Defines register variables.
DIM
Declares and dimensions arrays; also declares the
string length for a string variable.
ERASE
Erases array variables.
GLOBAL
Declares one or more work variables or register
variables defined in a file, to be global.
LET
Assigns a value to a given variable.
PRIVATE
Declares one or more work variables or register
variables defined in a file, to be private (as local
variables.)
READ Reads data defined by DATA statement(s) and
assigns them to variables.
RESTORE Specifies a DATA statement location where the
READ statement should start reading data.