>Now the obvious question (FAQ?). How best to get the >WDN of the app's folder under the mini-runtime of FB2 >(and equally under the tech runtime of FB^3)?? FN DefaultWD works in FB^3 and FBII. It returns the same value as system( _aplVol ) at startup: local fn DefaultWD dim volParamBlock.64 dim err volParamBlock.ioNamePtr& = 0 err = fn GetVol( @volParamBlock ) end fn = volParamBlock.ioVRefNum% ' demo in full runtime window 1 print fn DefaultWD, system( _aplVol ) do handleevents until fn button Robert P.