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ERROR

MESSAGE

ILLEGAL

DIRECT

This

occurs

when

you

try

to

use

the

following

statements

in

the

direct

mode:

GET

DEF

FN

INPUT

ILLEGAL

QUANTITY

The

argument

given

to

an

arithmetic

or

string

expression

either

does

not

match

the

type

of

expression

or

it

is

out

of

the

expression's

range.

Possibilities

are:

Using

the

SQR

-

square

root

-

function

with

a

negative

argument.

Using

a

negative

arg

ument

for

the

subscript

of

an

array.

Using

a

negative

or

zero

argument

with

the

LOG

-

natural

logarithm

-

function.

NEXT

WITHOUT

FOR

Self

explanatory.

The

variable

given

in

a

NEXT

statement

does

not

match

the

variable

.

name

given

in

a

FOR

statement

which

is

in

operation.

Alternatively,

a

NEXT

does

not

correspond

to

any

FOR

statement

which

is

in

effect.

A-16

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