National Geographic TOPO! v. 2 (.tpg) To open, first launch the map region that you own and then go to the File pull down menu and choose "Merge .tpg File".
Parents refers to a larger category under which an object falls. For example, theAconcagua mountain page has the 'Aconcagua Group' and the 'Seven Summits' asparents and is a parent itself to many routes, photos, and Trip Reports.