NEXT
    

Transfers control from within a DO- or WHILE-loop back to the beginning of the block. For DO, the loop variable is then set to the next value in the list and the loop is executed again. Here is a simple example, using a global macro.

The DO-loop goes through all the values in X. If a value is less than or equal to 5, NEXT passes control to the top of the DO-loop and the value is left unchanged. If a value is greater than 5, the ELSEIF block is executed and that value is set to 5.