MENU FOR LOGIC RELATED OPERATORS:
copyright (C) 1983 by E. E. Bergmann
words described in alphabetical(ASCII) order.
explanation of TFT NTT TOS
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*********************************************************
*							*
* PISTOL-Portably Implemented Stack Oriented Language	*
*			Version 2.0			*
* (C) 1983 by	Ernest E. Bergmann			*
*		Physics, Building #16			*
*		Lehigh Univerisity			*
*		Bethlehem, Pa. 18015			*
*							*
* Permission is hereby granted for all reproduction and *
* distribution of this material provided this notice is *
* included.						*
*							*
*********************************************************
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..	TFT NTT TOS --> TRUE|FALSE, cyclic range check.
	If NTT<=TOS the test is "TFT in [NTT..TOS]",
	else the test is "(NTT<=TFT) OR (TFT<=TOS)".
	{This definition is equivalent for both signed and
	 unsigned arithmetic! }

EQ	NTT TOS --> TRUE, if NTT is numerically equals TOS
		--> FALSE, otherwise

EQZ	TOS --> TRUE, if TOS is zero
	    --> FALSE, otherwise

FALSE	--> 0

GE	NTT TOS --> (NTT>=TOS)

GT	NTT TOS --> (NTT>TOS)

GTZ	TOS --> (TOS>0)

LAND	NTT TOS --> (NTT<>0)AND(TOS<>0), "Logical AND"

LE	NTT TOS --> (NTT<=TOS)

LNOT	TOS --> (TOS==FALSE), "Logical NOT"

LOR	NTT TOS --> (NTT<>0)OR(TOS<>0), "Logical OR"

LT	NTT TOS --> (NTT<TOS)

LTZ	TOS --> (TOS<0)

OFF	TOS -->
	Sets word pointed to by TOS to FALSE.

ON	TOS -->
	Sets word pointed to by TOS to TRUE.

TRUE	--> -1, actually any nonzero value would be acceptable,
	but -1 is represented by all 1's on many systems.

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	TOS - "Top Of Stack"

	NTT - "Next To Top" of stack

	TFT - "Third From Top" of stack

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