AT&T 6300 Programmer's Manual page 321

Syntax
stringexp
Remarks
Example
LEN
Function
Returns the number of characters in a given
string.
LEN ( stringexp )
is any string expression whose length is to be returned
Unprintable characters and blanks are
counted in the number of characters. If the
argument "stringexp" is a null string, LEN
returns zero.
10 XI
=
"PORTLAND, OREGON"
20 PRINT LEN(XI]
RUN 16
Ok
In the above example, there are 16 characters
in the string "PORTLAND, OREGON"
because the comma and the blank space are
included.
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