The types listed below specify the characters after the period in the file name that must be used to send a file of the associated Format.
Type Format .AU Audio (sound) .DAT Text .EXE Executable .GIF GIF Image .htmlL Text .MPG MPG Video .OBJ Object Module .PS PostScript .TIFF TIFF Image .TXT Text .DOC WinWord Document
Thus, the file
PICTURE.GIF is sent in GIF
Note: Only the most commonly used file types are listed above. Other formats are also available.