Professionals often use digital mapping software called “geographic information systems” (GIS) to manage and analyze mapped data. These data, often in the form of “shapefiles” can be imported from other sources into Ortelius from Menu > File > Import Shapefile, with some limitations.
Importing shapefiles is an advanced topic for users familiar with GIS. Ortelius is not a GIS, it is a graphic design program with extended capabilities for mapping. Users should become familiar with its limitations and best practices before working with shapefiles.