Question marks handlingPossible continuations are treated special way in therion in both centerline and map files. You may associate text description and arbitrary code with it. There is no special syntax for the code, different speleo groups have different standards for question mark classification, any string will be accepted. Question marks in centerlineIn the centerline object, you may add a special flags to the station, where continuation is possible. Just use following syntax station 5 "unexplored cca. 20 m pit" continuation code V When you export map and you use symbol-show point continuation-station in your layout, station with continuation flag specified is marked by question mark.
You may redefine continuation station symbol to show also
continuation description and code (stored in code metapost def p_continuation(expr pos,theta,sc,al) = % draw question mark above station p_continuation_UIS(pos,0.0,1.0,(0,2)); % if text attribute is set if ATTR__text_x: % set labeling color to light orange push_label_fill_color(1.0, 0.9, 0.8); % draw filled label with text below station p_label.bot(ATTR__text,pos shifted (0,-0.5u),0.0,8); % restore original labeling color pop_label_fill_color; fi; enddef; endcode Then also continuation code and description is displayed in the map. Question marks in maps
In the scrap (.th2 file), you can use point 796.0 676.0 continuation -text "water too cold to continue" -code A In the map, also only question marks are displayed. When you redefine continuation symbol as mentioned above, you can show also continuation codes and descriptions. Exporting question mark listsYou may also export a list of all continuations from your project project using export continuation-list -o questions.html File questions.html then contains following list:
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