The USER DEFINED WP feature is very poorly designed. The feature needs to be able to accept Rho-Theta WP definitions in FMS/FMF format, in addition to Lat/Long or chart cursor positions. For example the feature needs to be able to accept "PAE210/15" for the PAE VOR 220 deg radial at 15 nm. It then needs to name that point the PAE220/15 as well as also show that as an equivalent Lat/Long value. These WPs need to be easily entered into the flight plan, and easily revised.
Customer support service by UserEcho