Updating with editing capability

i've using perform for entering and updating records. for updating, it would be nice if the user-interface supplies some sort of editing capability. only way one can update in perform is to type over the old entry. can we do better than that in 4gl or third-vendor user-interface? in other words, is there a way to insert characters and delete characters with out typing over the original entry? thanx in advance, -- --------------------------------------------------------------------------- ron choi \\\\ #include <disclaimer.h> university of wisconsin, madison \\\\ "when i was your age, i walked ten miles to school, unarmed."