File psl-1983/3-1/tests/20/20main.mac from the latest check-in
; 20-main: simple driver to test MACRO version of 20 tests TITLE MAIN SEARCH MONSYM RADIX ^D10 EXTERN INIT20,MAIN20,QUIT20 ST=15 MAIN: RESET MOVE ST,[-1000,Stack] PUSHJ ST,INIT20 PUSHJ ST,MAIN20 PUSHJ ST,QUIT20 stack: block 1000 END MAIN