Add GPS data to any file type

[tadej]

Hi,
just wondering if it is possible to add GPS metadata to any file type. Like Word, Excel, PDF,...
Either as EXIF tags or as any other type of METADATA.
If yes, an example of the command line is appreciated.
Assuming that ExifTool will be able to read such tags 
Geo Tagged documents can play important role in mapping-related operations.

[StarGeek]

No, you can't just add any tag to any type of file.  Each file type can only hold certain types of metadata. Some, such as BMP, can't hold any metadata at all. See the Supported File Types table.  Any file that allows for the writing of EXIF data can hold the EXIF GPS tags. Any file type that allows for the writing of XMP can hold the XMP-exif GPS tags.