We have written about this a couple of times before, but until there’s time for us to get an up to date radio sailors manual written for the Spektrum take a look at this.

This website has an online link to a very good (US) radio sailors manual for the Spektrum DX6E. However, I think that the DX6E cannot do program mixing. The later DX8 and DX9 have it though. Program mixing enables you to implement “pinch and puff” modes on left-right throttle stick (mainsheet stick) movements.

http://www.stirling.saradioyachting.org.au/Sailing_Hints/radioprogramming1.htm