I've noticed that the easiest way to relate a channel calculation back to the original channel is to append to the channel name:
iH_EngSpeed_rpm
iH_EngSpeed_rpm_RegX
iH_EngSpeed_rpm_RegY
iH_EngSpeed_rpm_1
iH_EngSpeed_rpm_2
iH_EngSpeed_rpm_Filtered
Filtering for *engspeed, or *engspeed_rpm will return all of the above channels, but in my experience I rarely want to see all the additional channels...With enough channels, it can effectively obscure the channel you're looking for!
The simplest way I can think of to obscure these with the current functionality would be to have a stop character ("\"?) to prevent the filter from grabbing anything beyond that point:
*EngSpeed_rpm\ would return anything ending in *EngSpeed_rpm
Another way would be to get rid of the assumed * at the end of the filter, forcing people to put one on themselves when necessary (but that would be changing the current functionality and would likely confuse users at first):
*Engspeed_rpm would return anything ending in *EngSpeed_rpm
*EngSpeed_rpm* would return everything with EngSpeed_rpm inside it
This would also be nice for looking for channels that end in something, like anything ending in *nm\ rather than anything with nm in the name...