Waypoint Management - folders & select all

when dealing with large #'s of waypoints it would be very helpful to have a select all checkbox
so that it is not necessary to individually check each waypoint to display on map or delete.
Also when dealing with large #'s in different classes - say mountains and airports it would be
helpful to have folders to help manage them -similar to how Google Earth manages sets.
A workable method would be to use OI file manager to manage folders and re-import the desired waypoints each time
but only if there was a select all checkbox so that current waypoints could be deleted, a new set imported
and then the new set selected for display on map.

but waypoint folders ala Google Earth would save deleting & re-importing waypoint sets just to turn
on/off viewing