Syntax of REXX instructions

Some programming languages have rigid rules about how and where you enter characters on each line. For example, assembler statements must begin in a certain column. REXX, on the other hand, has simple syntax rules. You can use upper, or lower, or mixed case. REXX has no restrictions about the columns in which you can type.

An instruction can begin in any column on any line. The following are all valid instructions.

SAY 'You can type in any column' 
          SAY 'You can type in any column'
                    SAY 'You can type in any column'

These instructions are sent to the terminal output device:

You can type in any column
You can type in any column
You can type in any column