Interesting. I did find an implementation of backquoting in MDL, kind of: https://github.com/PDP-10/muddle/blob/master/mim/development/mim/vax/mimlib/backquote

Interesting. I did find an implementation of backquoting in MDL, kind of: https://github.com/PDP-10/muddle/blob/master/mim/development/mim/vax/mimlib/backquote.mud https://github.com/PDP-10/muddle/blob/master/mim/development... It doesn't run on any available MDL implementation, because it's actually for MIM, an even more obscure and undocumented extension of MDL. ZILF implements some parts of MIM, but doesn't implement READ-TABLEs at all, and the format of the table implied by that code is different from what's documented for MDL.