CASE
Evaluate a case expression.
See also BEGIN_CASE and END_CASE.

Format
 Case [[operator] expression [, ...]]
 operator can be: <, >, <=, >=, <
 Each CASE in the case evaluation block is tested until a match is found. The statements following the matched CASE are executed until the next CASE statement is encountered. The program then resumes execution at the statement following the END_CASE statement.
 NOTE
 'Case = expression' is NOT valid as a case evaluation, however it is a valid ASSIGNMENT statement (it assigns expression to a variable called case). You should notice that the word 'Case' will be lowercased to 'case' to show that it is considered a variable.

Example 1:
 Begin_case a! evaluate variable a
 Case <= 1
 ! a < = 1
 Case 2,3
 ! a = 2 or a =3
 Case
 ! default case
 End_case