3 TRACKS_EXTRA = dsf findloop
5 tracks : [X] GTK COMMON tracks TRACKS_EXTRA tracks-icon|no-icon
7 tracks : [G] WINDOWS COMMON tracks TRACKS_EXTRA tracks.res|noicon.res
9 ALL += tracks[COMBINED] TRACKS_EXTRA
20 tracks:tracks.exe:Tracks:Path-finding railway track puzzle:Fill in the railway track according to the clues.