On Wed, 18 Jun 2014, Sven Schreiber wrote: It's not a question of erasure, rather there's no mechanism in place to remember an ad-hoc directory that has been added to the function files listing on a previous occasion -- whether or not a new session is opened. We search a number of plausible places to find gfn files, but adding another place to that list is a one-time thing. However, the current behavior whereby the window showing function files gets closed automatically when a new dataset is opened may be debatable. Perhaps it ought to be on the short list of exempt windows. Allin