Continuing the theme of list outputs. Does anyone see the need for a list output file that expands on and compliments the tree view of maps available in the Map Structure pane of the XTherion compiler window? I'm just noticing that I have 46 maps/sub-maps for a 3.5km cave (that is moderately complex) and it will have a reasonable number more before it's done. Generally my naming convention keeps them in order for me, but I can see that an output listing them will make management easier and more reliable. There is only so much information that can be encapsulated in an object name, and if too much is included it is prone to user error. My suggestion is (using the existing html list outputs as a basis) that the table be hierarchical/collapsible in the same way as the existing 'caves' and 'surveys' outputs. The column outputs could be; id projection [spec] title object type date author defined (ie survey/scrap/map) (in which object/file?) bulmer elev 270 deg Bulmer Cave map 2008-2009 BulmerINDEX.th late08 elev 270 deg Late08 Series map 2008 .\Late08\Late08INDEX.th rm elev 270 deg survey rm map 2008 .\Late08\SurveyRM.th Late08RMPlan_s1 elev 270 deg scrap 2008 RBM .\Late08\RMElev.th2 Late08RMPlan_s2 elev 270 deg scrap 2009 MB .\Late08\RMElev.th2 Similarly, perhaps an 'id' column could be added to the 'caves' and 'surveys' output lists, as I expect Therion requires an id, but the titles are probably optional; And while I'm at it, the 'surveys' output could also include a 'date' and 'author' column. Thoughts anyone? Bruce