This raises an interesting problem. I could have used a "nice" Forth like RetroForth or Factor(?) but I wanted to learn ANS Forth before I moved on to specializations. However, now I realize there are *only* specializations. Pforth is apparently giving me all kinds of niceties, the premium DLC is included at the toplevel. And I know for a fact gforth (of course, because that stands for GNU Forth) contains GNU extensions. So there are two standard Forths in Linux, neither actually standard.