On Wed, Nov 24, 2021 at 7:23 AM Richard Salz <rich.salz@gmail.com> wrote:
....

          Compiled by: Multics PL/I Compiler, Release 33f, of February 11, 2017
          Compiled at: Installation and location
          Compiled on: 11/24/21  1411.5 pst Wed
              Options: table list

        1 try:proc options(main);
        2    dcl (if,then,else) fixed binary (31);
        3
        4    if = 1;
        5    then = 2;
        6    else = 3;
        7
        8    if if = then then then = if; else else = then;
        9
       10 end try;

-- Charles