Based on the idea that some Donchian Channels in trading books have a lookback or offset of 1 in order to use it as a sort of trailing stop or so that the channels don't adjust. Ichimoku's Tenkan and Kijun lines have a very similar formula to Donchian Channels. In case anyone wants to use those lines as a sort of more fixed trailing stop, offset the Kijun, Tenkan,...
