IAI America XSEL-QX - Manual (Page 440)

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Appendix
[3] Explanation of string
Strings sent by the aforementioned transmission format can be used freely in a program. To put it in
simple words, each string is stored in boxes.
Strings are classified into two types: global strings that can be read or written by all programs, and
local strings that can be read or written only in an individual program. These strings are differentiated
by column numbers.
Each character in a string is stored in one box.
The position of a given box storing a part of a string is indicated by a column number, and which columns
should be used to store the string can be set freely for each command.
For example, assume a string “HOME” indicating a home return command was received from the PC. If
this string is to be used in several programs, it can be stored in columns starting from 300.
Local string
Column
Global string
“HOME” is stored
from column 300.
Column
Column
Global string