Changes

: You have to use the command STEP if you wish to count backwards. It's good to name the ''control variable'' after NEXT for readability and better program style.

: After each loop the computer checks internaly if the ''target value'' has been reached (like an IF ... THEN ... ELSE instruction). If the target value is reached NEXT closes the loop and calculates another step, so the ''control variable'' will be changed last time.

: Example: