pr printpi1
ls -ls | pr
pr sizes
pr -tn pi_strings
pr makepi1
pr comp load whoami
cxref *.c > XREF ; pr XREF
pr ../opcodes/picture
pr ../opcodes/trdata
pr 0.h send.h
pr main.c
pr yymain.c
pr [a-ln-x]*.c
pr putn.s treen.s wait.s
pr TRdata.c
pr tree.h 
pr ../opcodes/trdata