Functions in the folder Options make it possible to change the default settings of GeoLab. For example, by default, when GeoLab reads a gdt file, the GAD map in it is loaded, too. If the GAD, however, is not needed, enableIgnoreGAD(true) can be used to speed up the loading. For a description and examples of the functions, check the GeoLab documentation in MATLAB in the section Options.