UG (file format)
Program and/or Extension Function: Drawing File
Specific Notes: (None)
Identifying Characters: (None or Unknown)
Program ID: (None or Unknown)
General Notes: Various programs use this extension; too many to list individually. Take clues from the location of the file as a possible pointer to exactly which program is producing the file. The file's date and time can also help if you know which programs you were running when the file was written.