Keywords

The BASIC language consists mainly of keywords along with rules for combining them (additional factors are naming rules, literal values, and data formats). The keywords can be classified according to use or "type". One classification set (used here) is:

Command (used outside a program [direct mode] to perform an action)
Statement (used inside a program [run mode] to perform an action)
Preposition (used along with other keywords; generates an error if used alone)
Function (calculates a value; used in math expressions)
Operator (usually not a word, but a symbol; used to combine math expressions)
Reserved variable (these are really functions that take no arguments)

A more detailed listing follows, but here is a quick list of CBM BASIC Keywords:

^	*	+	-	/	<	=	>	π (pi)
ABS	AND	APPEND	ASC	ATN	AUTO	BACKUP	BANK	BEGIN
BEND	BLOAD	BOOT	BSAVE	BOX	BUMP	CATALOG	CHAR	CHR$
CIRCLE	CLOSE	CLR	CMD	COLLECT	COLLISION	COLOR	CONCAT	CONT
COPY	COS	DATA	DCLEAR	DCLOSE	DEC	DEF	DELETE	DIM
DIRECTORY	DISPOSE	DLOAD	DO	DOPEN	DRAW	DS	DS$	DSAVE
DVERIFY	EL	ELSE	END	ENVELOPE	ER	ERR$	EXIT	EXP
FAST	FETCH	FILTER	FN	FOR	FRE	GET	GET#	GETKEY
GO	GOSUB	GOTO	GRAPHIC	GSHAPE	HEADER	HELP	HEX$	IF
INPUT	INPUT#	INSTR	INT	JOY	KEY	LEFT$	LEN	LET
LIST	LOAD	LOCATE	LOG	LOOP	MID$	MONITOR	MOVSPR	NEW
NEXT	NOT	OFF	ON	OPEN	OR	PAINT	PEEK	PEN
PLAY	POINTER	POKE	POS	POT	PRINT	PRINT#	PUDEF	QUIT
RCLR	RDOT	READ	RECORD	REM	RENAME	RENUMBER	RESTORE	RESUME
RETURN	RGR	RIGHT$	RLUM	RND	RREG	RSPCOLOR	RSPPOS	RSPRITE
RUN	RWINDOW	SAVE	SCALE	SCNCLR	SCRATCH	SGN	SIN	SLEEP
SLOW	SOUND	SPC(	SPRCOLOR	SPRDEF	SPRITE	SPRSAV	SQR	SSHAPE
ST	STASH	STEP	STOP	STR$	SWAP	SYS	TAB(	TAN
TEMPO	THEN	TI	TI$	TO	TRAP	TROFF	TRON	UNTIL
USING	USR	VAL	VERIFY	VOL	WAIT	WHILE	WIDTH	WINDOW
XOR
	1.0+	2.0+	3.5+	4.0+	4.7+
	3.5, 4.7+	3.5 only	4.7 only	3.5, 7.0	7.0 only

Most of the keywords used by Commodore BASIC are "compressed" into (typically) a 1-byte code known as a token (see the page on tokens for more details). Below is a table listing all keywords ordered by their "name". The table also includes the token value(s), version number(s) to which it applies, and a classification.

Keyword	Token (hex)	Version(s)	Classification
^	AE	1.0+	Operator (1)
*	AC	1.0+	Operator (2)
/	AD	1.0+	Operator (2)
+	AA	1.0+	Operator (3)
-	AB	1.0+	Operator (3)
>	B1	1.0+	Operator (4)
=	B2	1.0+	Operator (4)
<	B3	1.0+	Operator (4)
π (pi)	FF	1.0+	Reserved variable
ABS	B6	1.0+	Function
AND	AF	1.0+	Operator (6)
APPEND	D4	4.x	Command and Statement
APPEND	FE 0E	7.0	Command and Statement
ASC	C6	1.0+	Function
ATN	C1	1.0+	Function
AUTO	DC	3.5,7.0	Command and Statement
BACKUP	F6	3.5,7.0	Command and Statement
BACKUP	D2	4.x	Command and Statement
BANK	DC	4.7	Command and Statement
BANK	FE 02	7.0	Command and Statement
BEGIN	FE 18	7.0	Preposition
BEND	FE 19	7.0	Command, Preposition, and Statement
BLOAD	DD	4.7	Command and Statement
BLOAD	FE 11	7.0	Command and Statement
BOOT	FE 1B	7.0	Command and Statement
BSAVE	DE	4.7	Command and Statement
BSAVE	FE 10	7.0	Command and Statement
BOX	E1	3.5,7.0	Command and Statement
BUMP	CE 03	7.0	Function
CATALOG	D7	4.x	Command and Statement
CATALOG	FE 0C	7.0	Command and Statement
CHAR	E0	3.5,7.0	Command and Statement
CHR$	C7	1.0+	Function
CIRCLE	E2	3.5,7.0	Command and Statement
CLOSE	A0	1.0+	Command and Statement
CLR	9C	1.0+	Command and Statement
CMD	9D	1.0+	Command and Statement
COLLECT	F3	3.5,7.0	Command and Statement
COLLECT	D1	4.x	Command and Statement
COLLISION	FE 17	7.0	Command and Statement
COLOR	E7	3.5,7.0	Command and Statement
CONCAT	CC	4.x	Command and Statement
CONCAT	FE 13	7.0	Command and Statement
CONT	9A	1.0+	Command* and Statement
COPY	F4	3.5,7.0	Command and Statement
COPY	D3	4.x	Command and Statement
COS	BE	1.0+	Function
DATA	83	1.0+	Command* and Statement
DCLEAR	DB	4.7	Command and Statement
DCLEAR	FE 15	7.0	Command and Statement
DCLOSE	CE	4.x	Command and Statement
DCLOSE	FE 0F	7.0	Command and Statement
DEC	D1	3.5,7.0	Function
DEF	96	1.0+	Statement
DELETE	F7	3.5,7.0	Command and Statement
DELETE	E0	4.7	Command and Statement*
DIM	86	1.0+	Command and Statement
DIRECTORY	EE	3.5,7.0	Command and Statement
DIRECTORY	DA	4.x	Command and Statement
DISPOSE	E4	4.7	Command and Statement
DLOAD	F0	3.5,7.0	Command and Statement*
DLOAD	D6	4.x	Command* and Statement
DO	EB	3.5,7.0	Command and Statement
DOPEN	CD	4.x	Command and Statement
DOPEN	FE 0D	7.0	Command and Statement
DRAW	E5	3.5,7.0	Command and Statement
DS	44 53**	3.5+	Reserved variable
DS$	44 53 24**	3.5+	Reserved variable
DSAVE	EF	3.5,7.0	Command and Statement
DSAVE	D5	4.x	Command and Statement
DVERIFY	FE 14	7.0	Command and Statement
EL	45 4C**	3.5, 4.7+	Reserved variable
ELSE	D5	3.5,7.0	Command, Preposition, and Statement
ELSE	E1	4.7	Command, Preposition, and Statement
END	80	1.0+	Command* and Statement
ENVELOPE	FE 0A	7.0	Command and Statement
ER	45 52**	3.5, 4.7+	Reserved variable
ERR$	D3	3.5,7.0	Function
ERR$	E7	4.7	Function
EXIT	ED	3.5,7.0	Command and Statement
EXP	BD	1.0+	Function
FAST	FE 25	7.0	Command and Statement
FETCH	FE 21	7.0	Command and Statement
FILTER	FE 03	7.0	Command and Statement
FN	A5	1.0+	Function/Preposition
FOR	81	1.0+	Command or Statement
FRE	B8	1.0+	Function
GET	A1	1.0+	Preposition
GET#	A1 23	1.0+	Statement
GETKEY	A1 F9	3.5, 7.0	Statement
GO	CB	2.0+	Command and Statement
GOSUB	8D	1.0+	Command and Statement
GOTO	89	1.0+	Command and Statement
GRAPHIC	DE	3.5,7.0	Command and Statement
GSHAPE	E3	3.5,7.0	Command and Statement
HEADER	F1	3.5,7.0	Command and Statement
HEADER	D0	4.x	Command and Statement
HELP	EA	3.5,7.0	Command and Statement*
HEX$	D2	3.5,7.0	Function
IF	8B	1.0+	Command and Statement
INPUT	85	1.0+	Statement
INPUT#	84	1.0+	Statement
INSTR	D4	3.5,7.0	Function
INSTR	E8	4.7	Function
INT	B5	1.0+	Function
JOY	CF	3.5,7.0	Function
KEY	F9	3.5,7.0	Command, Preposition, and Statement
KEY	DF	4.7	Command and Statement
LEFT$	C8	1.0+	Function
LEN	C3	1.0+	Function
LET	88	1.0+	Command and Statement
LIST	9B	1.0+	Command and Statement*
LOAD	93	1.0+	Command* and Statement
LOCATE	E6	3.5,7.0	Command and Statement
LOG	BC	1.0+	Function
LOOP	EC	3.5,7.0	Command and Statement
MID$	CA	1.0+	Function
MONITOR	FA	3.5,7.0	Command and Statement
MOVSPR	FE 06	7.0	Command and Statement
NEW	A2	1.0+	Command and Statement*
NEXT	82	1.0+	Command, Preposition, and Statement
NOT	A8	1.0+	Operator (5)
OFF	FE 24	7.0	Preposition
ON	91	1.0+	Preposition
OPEN	9F	1.0+	Command and Statement
OR	B0	1.0+	Operator (7)
PAINT	DF	3.5,7.0	Command and Statement
PEEK	C2	1.0+	Function
PEN	CE 04	7.0	Function
PLAY	FE 04	7.0	Command and Statement
POINTER	CE 0A	7.0	Function
POKE	97	1.0+	Command and Statement
POS	B9	1.0+	Function
POT	CE 02	7.0	Function
PRINT	99	1.0+	Command and Statement
PRINT#	98	1.0+	Command and Statement
PUDEF	DD	3.5,7.0	Command and Statement
PUDEF	E5	4.7	Command and Statement
QUIT	FE 1E	7.0	Command and Statement
RCLR	CD	3.5,7.0	Function
RDOT	D0	3.5,7.0	Function
READ	87	1.0+	Command and Statement
RECORD	CF	4.x	Command and Statement
RECORD	FE 12	7.0	Command and Statement
REM	8F	1.0+	Command and Statement
RENAME	F5	3.5,7.0	Command and Statement
RENAME	D8	4.x	Command and Statement
RENUMBER	F8	3.5,7.0	Command
RESTORE	8C	1.0+	Command and Statement
RESUME	D6	3.5,7.0	Statement
RESUME	E3	4.7	Statement
RETURN	8E	1.0+	Statement
RGR	CC	3.5,7.0	Function
RIGHT$	C9	1.0+	Function
RLUM	CE	3.5	Function
RND	BB	1.0+	Function
RREG	FE 09	7.0	Command and Statement
RSPCOLOR	CE 07	7.0	Function
RSPPOS	CE 05	7.0	Function
RSPRITE	CE 06	7.0	Function
RUN	8A	1.0+	Command and Statement
RWINDOW	CE 09	7.0	Function
SAVE	94	1.0+	Command and Statement
SCALE	E9	3.5,7.0	Command and Statement
SCNCLR	E8	3.5,7.0	Command and Statement
SCRATCH	F2	3.5,7.0	Command and Statement
SCRATCH	D9	4.x	Command and Statement
SGN	B4	1.0+	Function
SIN	BF	1.0+	Function
SLEEP	FE 0B	7.0	Command and Statement
SLOW	FE 26	7.0	Command and Statement
SOUND	DA	3.5,7.0	Command and Statement
SPC(	A6	1.0+	Preposition
SPRCOLOR	FE 08	7.0	Command and Statement
SPRDEF	FE 1D	7.0	Command and Statement
SPRITE	FE 07	7.0	Command and Statement
SPRSAV	FE 16	7.0	Command and Statement
SQR	BA	1.0+	Function
SSHAPE	E4	3.5,7.0	Command and Statement
ST	53 54**	1.0+	Reserved variable
STASH	FE 1F	7.0	Command and Statement
STEP	A9	1.0+	Preposition
STOP	90	1.0+	Command* and Statement
STR$	C4	1.0+	Function
SWAP	FE 23	7.0	Command and Statement
SYS	9E	1.0+	Command and Statement
TAB(	A3	1.0+	Preposition
TAN	C0	1.0+	Function
TEMPO	FE 05	7.0	Command and Statement
THEN	A7	1.0+	Preposition
TI	54 49**	1.0+	Reserved variable
TI$	54 49 24**	1.0+	Reserved variable
TO	A4	1.0+	Preposition
TRAP	D7	3.5,7.0	Statement
TRAP	E2	4.7	Statement
TROFF	D9	3.5,7.0	Command and Statement
TRON	D8	3.5,7.0	Command and Statement
UNTIL	FC	3.5,7.0	Preposition
USING	FB	3.5,7.0	Preposition
USING	E6	4.7	Preposition
USR	B7	1.0+	Function
VAL	C5	1.0+	Function
VERIFY	95	1.0+	Command* and Statement
VOL	DB	3.5,7.0	Command and Statement
WAIT	92	1.0+	Command and Statement
WHILE	FD	3.5,7.0	Preposition
WIDTH	FE 1C	7.0	Command and Statement
WINDOW	FE 1A	7.0	Command and Statement
XOR	CE 08	7.0	Function

Wow, you read all that?! A few notes about the the table. The "tokens" marked ** are really just the ASCII code(s) for the letters that make up the name (you should see this only applies to reserved variable names). Most keywords can be used as commands (in direct mode) or as statements (in a running program), although a few can only be used one way but not the other. However, there are several that in theory could be used as either commands or statements, but certain uses are uncommon in practice due to no effect or undesirable side-effects; these are marked with an asterisk (*).

Expressions in BASIC are evaluated using a fixed precedence (order of operations) for the different math operators. Each operator listed has its precedence level shown in parentheses. For example, addition (+) is listed as "Operator (3)" which means it has 3rd (third) highest priority. Precedence levels range from 1 (highest) to 7 (lowest). Note that any sub-expressions enclosed in parentheses will be evaluated with an even higher precendence.