Import Dungeondraft Map
This feature is available as of MapTool 1.7.0
The map creation program Dungeondraft has a VTT agnostic export format (.dd2vtt) that includes not only the map image but also light/vision blocking information (walls and such), light sources on the maps, and portals (doors & windows). This allows MapTool to read in the export file and create a MapTool map with VBL already in place.
Select Import Dungeondraft VTT... from the File menu will prompt for a .dd2vtt file and then display the Imported Map Properties dialog.
And the map file loaded into MapTool.