1....To modify the PSK31 message buffers, the instructions indicate we can use 26 control characters %A through %Z where %M is carriage return, %X is start and %C for a CW i.d. What do the other 23 do, or how can I modify/create controls ?? This question was asked earlier but I never saw a response. I would be interested in a response to this as well. Does anyone know ? Thanks in advance Jeff Baker KG4ENR