This is a list of words which are RESERVED in TI BASIC. Other forms of BASIC have longer lists.
Reserved words are words that may not be used as variable names in TI Basic.
Note that only the exact word shown is reserved. You may use reserved words as part of a variable name (for example, ALEN and LENGTH are allowed).
The following is a complete list of all reserved words in TI Basic:
ABS APPEND ASC ATN BASE BREAK BYE CALL CHR$ CLOSE CON CONTINUE COS
DATA DEF DELETE DIM DISPLAY EDIT ELSE END EOF EXP FIXED FOR
GO GOSUB GOTO IF INPUT INT INTERNAL
LEN LET LIST LOG NEW NEXT NUM NUMBER
OLD ON OPEN OPTION OUTPUT PERMANENT POS PRINT
RANDOMIZE READ REC RELATIVE REM RES RESEQUENCE RESTORE RETURN RND RUN
SAVE SEG$ SEQUENTIAL SGN SIN SQR STEP STOP STR$ SUB TAB TAN THEN TO TRACE
UNBREAK UNTRACE UPDATE VAL VARIABLE