**PDP-6 LISP** ITS has a copy of PDP-6 LISP, found on a DECtape from Peter Samson. It's located in the ''.'' directory. To run it, the computer must be taken out of timesharing. From DSKDMP, just type ''lisp'' to start PDP-6 LISP. It has been patched to run on a PDP-10 as well. Here is a sample session which displays ''HELLO-WORLD'' on the 340 display. ALLOC? N (ARRAY HELLO T 100) 36233 (DISINI (QUOTE HELLO)) NIL (SETQ DISLIST (LIST (GET (QUOTE HELLO) (QUOTE SUBR)))) (#36171) (DIDAS (QUOTE HELLO) NIL (QUOTE HELLO-WORLD)) T