Apple II manual Statement SYNTAX/FUNCTION LEFT$, Statement SYNTAX/FUNCTION LEN

	Inputs a single character from the keyboard.
	If data is at the keyboard, it is put in the
	variable specified in the GET statement.
	If no data is available, the BASIC program
	will continue execution.
	GET can only be used as an indirect
	command.
STATEMENT	SYNTAX/FUNCTION
LEFT$	LEFT$ (string expression, length)
	Gives the leftmost I characters of the string
	expression X$. If I<=0 or >255 an FC
	error occurs.
STATEMENT	SYNTAX/FUNCTION
LEN	LEN (string expression)
	Gives the length of the string expression X$
	in characters (bytes). Non-printing charac-
	ters and blanks are counted as part of the
	length.
STATEMENT	SYNTAX/FUNCTION
MID$	MID$ [string expression, start [, length])
	MID$ called with two arguments returns
	characters from the string expression X$
	starting at character position I. If
	I>LEN(X$), then MID$ returns a null
	(zero length) string. If I<=0 or >255,
	an FC error occurs,
	MID$ called with three arguments returns
	a string expression composed of the
	characters of the string expression X$
	starting at the Ith character for J characters.
	If I>LEN(X$), MID$ returns a null string.
	If I or J <=0 or >255, an FC error occurs.
	If J specifies more characters than are left
	in the string, all characters from the Ith on
	are returned.
STATEMENT	SYNTAX/FUNCTION
RIGHT$	RIGHT$ (string expression, length)
	Gives the rightmost I characters of the
	string expression X$. When I<=0 or
	>255 an FC error will occur. If
	I>=LEN(X$) then RIGHT$ returns all
	of X$.
STATEMENT	SYNTAX/FUNCTION
STR$	STR$ (expression)
	Gives a string which is the character repre-
	sentation of the numeric expression X.
	For instance, STR$(3.1)="3.1."
STATEMENT	SYNTAX/FUNCTION
VAL	VAL (string expression)
	Returns the string expression X$ converted
	to a number. For instance.
	VAL("3.1")=3.1. If the first non-space
	character of the string is not a plus (+) or
	minus (-) sign; a digit or a decimal point (.)
	then zero will be returned.

EXAMPLE

310 PRINT LEFT$(X$,I)

EXAMPLE

220 PRINT LEN(X$)

EXAMPLE

330 PRINT MID$(X$,I)

340 PRINT MID$(X$, I,J)

EXAMPLE

320 PRINT RIGHT$ (X$,I)

EXAMPLE

290 PRINT STR$(X)

EXAMPLE

280 PRINT VAL(X$)