I am an old oziexplorer user but I got somewhat fed up with the android licence policy of this software (separate licence for each android device). When searching for an alternative I came across Oruxmaps. After playing around a little bit I am really impressed by the programme. Since it also can handle oziexplorer maps (ozf2) I am seriously considering changing to this software.
Lot's of my maps, however, are calibrated with the Austrian datum (MGI Austria). When I want to use them with Oruxmaps I get the error message: "unknown datum". Is there a way in Oruxmaps to create user defined datums? (I searched the forum, but could not find any instructions). If not, could this option be added?