Add conditional branch for reading data from GEO.DAT file
Generate list of all GEO.DAT files in working folder
Select first GEO.DAT file from list if multiple exists
Obtain several lines from header of the GEO.DAT file
Obtain the UTM zone and hemisphere from GEO.DAT file
Obtain the datum information from GEO.DAT file
Get the grid information from the GEO.DAT file