# Batch Basic 2 quick reference


Strings are delimited with double quotes; no escape characters.

Identifiers are alphanumeric and start with a letter.

Keywords and identifiers are case-insensitive.

TRUE and FALSE are parsed as -1 and 0, respectively.

## Statements

None of the statements are privileged, but some are defined only in stand-alone and/or interactive mode.

### Essentials

REM text

PRINT [string | expression [, | ;] ...]
LET variable | array[index] = expression
INPUT [string ,] variable [, variable...]

### Control structures

IF condition THEN statement [: statement...]

TEST condition
IFTRUE statement [: statement...]
IFFALSE statement [: statement...]

WHILE condition
	...
WEND

FOR variable = start TO limit [STEP step]
	...
NEXT [variable]

REPEAT
	...
UNTIL condition

DO variable = start, limit [, step]
	...
DONE

ON expression GOSUB name [, name ...]

### Subroutines

SUB name
	...
RETURN

[CALL] name

(CALL can be omitted if the subroutine name is alphabetic.)

### Miscellaneous

DATA value [, value...]
READ variable [, variable...]
RESTORE index
POKE index, value

RANDOMIZE [seed]

DIM array[size]
REDIM array[size]
ERASE name [, name...]

OPTION EXPLICIT

### Stand-alone mode only

MERGE filename
QUIT

### Interactive mode only

LOAD filename
CLEAR
NEW
DELETE subroutine
LIST [subroutine]
SAVE filename

## Functions

* ABS(n), SGN(n), INT(n), SQR(n)
* PI(), SIN(), COS(n), DEG(n), RAD(n), HYPOT(a, b)
* MIN(a, b), MAX(a, b)
* E(), EXP(n), LOG(n)
* PEEK(n), RND(), TIMER()