->                                               (program
                                                     (type 'PROG_REXX')
Say 'Hello, World!'                Ä                (title 'Program.rx')
                                                     (includes
Exit                                                     'ControlProgram/IO/Std'
                                                     )
                                                     (proc
                                                         (type 'PROC_MAIN')
                                                         (flags
                                                             (recursive 0)
                                                             (wr '')
                                                         )
                                                         (arg ())
                                                         (code
                                                             (call
                                                                 (name 'StdOut')
                                                                 (parameters
                                                                     (var
                                                                         (type 'VAR_ARRAY' 'VAR_STRING')
                                                                         (placement 'VAR_STACK')
                                                                         (data
                                                                             (string 'Hello, World!')
                                                                             (string "\n")
                                                                         )
                                                                     )
                                                                 )
                                                             )
                                                         )
                                                     )
                                                 )
