[Therion] Entrances on map

Hello How to show entrances on map? If I create a model the entrances is displayed. But how to display them on the map? My thconfig follows such shema: === source centerline cs lat-long station ent1 "Entrance 1" entrance fix ent1 ... station ent2 "Entrance 2" entrance fix ent2 ... endcenterline surface bitmap ... endsurface endsource export map -o surface.pdf === PS: And addition question: what is purpose of 'mark fixed' command? -- WBR, Vasily