NAME
  IF...THEN...ELSE Statement

SYNOPSIS
  IF condition1 THEN
      [statementblock-1]
  [ELSEIF condition2 THEN
      [statementblock-2]]...
  [ELSE
      [statementblock-n]]
  END IF
  IF condition THEN statements [ELSE statements]
      o condition1          Any expression that can be evaluated as
        condition2          true (nonzero) or false (zero).
      o statementblock-1    One or more statements on one or more lines.
        statementblock-2
        statementblock-n
      o statements          One or more statements, separated by colons.

DESCRIPTION
  Executes a statement or statement block depending on specified conditions.

  Example:
      INPUT "1 or 2? ", i%
      IF i% = 1 OR i% = 2 THEN
          PRINT "OK"
      ELSE
          PRINT "Out of range"
      END IF

SEE ALSO
  ON...GOSUB ON...GOTO SELECT CASE