Lower or equal (<=)
The <= operator
is provided to test whether a value or expression is lower than or
equal to another.
Syntax
expr <= expr 
 Usage
Use the lower-or-equal operator to test if a value of the left operand is lower than or equal to the value of the right operand.
This operator applies to expressions that evaluate to primitive data types such
as INTEGER, VARCHAR, DATE. It does not apply to the BYTE and TEXT types.
If one of the operands is NULL, the comparison expression evaluates to
NULL.
Example
MAIN
  DEFINE n INT
  LET n = 100
  IF n <= 100 THEN
     DISPLAY "The variable is lower than or equal to 100."
  END IF
END MAIN