1. Use Least Square Method to calculate baln solution.

2. At first entry to main menu, set serial port baud to 9600.

VERSION 3.20, 06/13/99

1. Support Year 2000.

VERSION 3.21á, 08/05/2000

1. Change High/Low tooth selections as "None / High / Shifted / Low"
4 options for firmware version 2.06 or above.
    Default: CF6: High; RB211: Low for "-22B", None for "-535"; TAY: None.