Vector Basic Interpreter Basic 80 Reference Manual - page 76

m

are

integer

expressions

and

and

exp2>

are

string

where

n

and

exp1>

expressions.

Extended, Disk

To replace a portion of one string with

another

string.

The characters in 

exp1>,

beginning

at

position

n,

are

replaced by the characters in

.

The optional

m

refers

to

the

number

of

characters

from

 that

will be

used

in

the

replacement.

If

m

is

omitted, all of 

However,

regardless of whether m is omitted or

included,

the

replacement of characters never goes beyond

the original length of .

10 A$="KANSAS

CITY,

MO"

20 MID$(A$,14)="KS"

30 PRINT A$

RUN

KANSAS

CITY,

KS

MID$

may also be used as a function that returns

a

substring

of

a

given

string.

See Section

3.24.