SECTION 20

TABLE OF CONTENTS * 20.1 Reserved System Words (Keywords) * 20.2 Reserved System Symbols

20.1 Reserved System Words (Keywords)

This section lists the words and symbols used to make up the BASIC 7.0 language. These words and symbols cannot be used within a program as other than a component of the BASIC language. The only exception is that they may be used within quotes in a PRINT or LET statement.

ABS AND APPEND ASC ATN AUTO BACKUP BANK BEGIN BEND BLOAD BOOT BOX BSAVE BUMP CATALOG CHAR CHR$ CIRCLE CLOSE CLR CMD COLLECT COLLISION COLOR CONCAT CONT COPY COS DATA DCLEAR DCLOSE DEC DEF DELETE

DIM DIRECTORY DLOAD DO DOPEN DRAW DS DSAVE DS$ DVERIFY EL ELSE END ENVELOPE ER ERR$ EXIT EXP FAST FETCH FILTER FN FOR FRE GET GETKEY GET# GO64 GOSUB GOTO GO TO 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 {pi} PLAY POINTER POKE POS POT

PRINT PRINT# PUDEF QUIT** RCLR RDOT READ RECORD REM RENAME RENUMBER RESTORE RESUME RETURN RGR RIGHT$ 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

* LET may be left out of the statement, so LET A=10 may be written as A=10.

** OFF and QUIT are unimplemented.

20.2 Reserved System Symbols

The following characters are reserved system symbols.

	Symbol	Use(s)
+	Plus sign	Arithmetic addition; string concatenation; relative sprite movement; declare decimal number in machine language monitor.
-	Minus sign	Arithmetic subtraction; negative number; unary minus; relative sprite movement.
*	Asterisk	Arithmetic multiplication.
/	Slash	Arithmetic division.
^	Up arrow	Arithmetic exponentiation.
	Blank space	Separate keywords and variable names.
=	Equal sign	Value assignment; relationship testing.
<	Less than	Relationship testing.
>	Greater than	Relationship testing.
,	Comma	Format output in variable lists; separate multiple function parameters in commands or statements.
.	Period	Decimal point in floating constants.
;	Semicolon	Format output in variable lists.
:	Colon	Separate multiple BASIC statements on a program line; logical end of line in machine language monitor.
" "	Quotation mark	Enclose string constants
?	Question mark	Abbreviation for the keyword PRINT; logical end of line in machine language monitor.
(	Left parenthesis	Expression evaluation and functions.
)	Right parenthesis	Expression evaluation and functions.
%	Percent	Declare a variable name as integer; declare binary number in machine language monitor.
#	Hash	Precede the logical file number in input/output statements.
$	Dollar sign	Declare a variable name as a string; declare hexadecimal number in machine language monitor.
&	And sign	Declare octal number in machine language monitor.
{pi}	Pi	Declare the numeric constant - approximately 3.14159265