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Reserved Keywords

Keywords are reserved, so don't try to use them as macro names or whatever. You can use the lowercase forms if you explicitly ask to be allowed to overload them. The control words are :
WORD STRING FLOAT INTEGER ( ) { 2 \n ! APROPOS CHDIR DEFINE DELETE DO
EDIT ELSE FOREACH HELP HISTORY IF KEY LIST MACRO OLD OVERLOAD PRINT
PROMPT QUIT READ RESTORE RETURN ROW SAVE SET STANDARD TERMTYPE USER
VERBOSE VERSION WRITE

Arithmetic words are :

ABS ACOS ASIN ATAN ATAN2 CONCAT COS DIMEN EXP FFT INT LG LN PI
POWER_SYMBOL SIN SQRT STRLEN SUM TAN WHATIS [ ] = + - * / < > | & ? :

SM plotting keywords are:

ANGLE ASPECT AXIS BOX CONNECT CONTOUR CTYPE CURSOR DATA DEVICE DOT DRAW
ERASE ERRORBAR EXPAND FORMAT GRID HISTOGRAM IMAGE LABEL LEVELS LIMITS
LINES LOCATION LTYPE LWEIGHT MINMAX NOTATION POINTS PTYPE PUTLABEL RANGE
RELOCATE SHADE SORT SPLINE TICKSIZE WHATIS WINDOW XLABEL YLABEL

These are described below, with the convention that arguments between square brackets are optional. This has nothing to do with their use in subscripting arrays!

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