GTCO Summagrid IV - Users Guide Part 3 - Manual (Page 28)

Summagrid IV 28
Character Definition
X
,
Y
F
X coordinate digit, where each digit is an ASCII character from 0 to 9.
ASCII comma
Y coordinate digit, where each digit is an ASCII character from 0 to 9.
Stylus and cursor flag character, identifying the button status
Flag Bit Definitions for the Stylus and Four-Button Cursor
Character Definition
LSB
MSB
Fa-Fc Least significant bit
Most significant bit
Flag bit, identifying the stylus/cursor buttons being pressed. The
possible combinations are listed in the tables below.