Editing RPL (programming language) (section)

====FOR/NEXT====
RPL provides a FOR/NEXT statement for looping from one index to another. The index for the loop is stored in a temporary local variable that can be accessed in the loop. The syntax of the FOR/NEXT block is:

 index_from index_to FOR variable_name loop_statement NEXT

The following example uses the FOR loop to sum the numbers from 1 to 10. The index variable of the FOR loop is "I":

  « 
     0       @ Start with zero on the stack
     1 10    @ Loop from 1 to 10
     FOR I   @ "I" is the local variable
        I +  @ Add "I" to the running total
     NEXT    @ Repeat...
  »