|Whirlgif Man Page 4|
Add the Netscape ‘loop’ extension. If count is omitted, 0 (zero) is assumed. This is a global option and must be given before any GIFfiles.
Define a Comment Extension block within the resulting GIF file. This block will be written at the end of the file. A comment block can be at most 254 characters long, including line shifts. It may be used for copyright notices. This is a global option and must be given before any GIFfiles.
Sets the image ‘disposal’ method. When this option is used as a file-option, its setting is valid for all subsequent GIFfiles, until it is used again. The methods may be one of the keywords:
none No disposal specified.
back Restore to background color. Fill the image’s space with the background color.
prev Restore to previous, restores the screen area to what was there before. Netscape has a problem with this option.
not Do not dispose. The default, the next image will overlay this one.