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Implement all ANS core words #4
Implement all ANS Core words
If . is implemented without resort to <# etc. and without resort to double precision words, it may be of dubious value to implement those.
ENVIRONMENT can be left out; it is a candidate for obsolescence and almost never used.
All double precision operators are in core just because they were thought needed for number output that was 32 bits in the 16 bit era.
What with QUIT ? There must be some read-evaluate-print-loop somewhere. Just call it QUIT and you're done.