The File menu provides options allowing you to save the current ground control point list to a file and to add additional ground control points from a file.
The file specifying the ground control points should be a comma-delimited file in the following format:
< x-pixel location >, < y-pixel location >, < x-ground location >, < y-ground location >, < point name (optional) >, < point error in pixels (optional) >
There are also options on the File menu for loading control points and projection information from an OziExplorer .map, CompeGPS .imp, and Touratech TTQV .cal files as well as saving your control point information to world (TFW, JGW, etc.) files.