C.1.11. Error 14 - Incomplete DO/LOOP/SELECT/IF.

Explanation:

At the end of the program or the string for an INTERPRET instruction, a DO, LOOP, or SELECT instruction was found without a matching END or an IF clause that is not followed by a THEN clause. Putting the name of the control variable on each END closing a controlled loop can help locate this kind of error.

The associated subcodes are:

001: DO instruction on line line_number requires matching END.
002: SELECT instruction on line line_number requires matching END.
003: THEN on line line_number must be followed by an instruction.
004: ELSE on line line_number must be followed by an instruction.
005: DO or LOOP instruction on line line_number requires matching END.
901: OTHERWISE on line line_number requires matching END.