Testing a variable within a range

[boriel]

Just for the record (as someone else might find this thread useful):

Code:

IF/ELSEIF .. THEN <something>

does not require END IF, however

Code:

THEN
  <something>
END IF : REM required

THEN at the end of line starts a block which must be closed with END IF.

In the later case you're using

Code:

ELSEIF X = 2 THEN IF T<10 THEN
  X = 3
END IF

And this is OK, but the END IF if closing the IF T < 10 condition (the ELSEIF ... THEN if followed by such IF, not by an End Of Line, hence no END IF is needed to close it).