This group is automatically enabled or disabled depending on the output device you selected ("on" list box). This group is enabled only if you select a "device" that does not output to paper or to an imagesetter but writes to a file. "Devices" with file output in the ImpositionOutput sequence are Tiff-B export processors that can be named, for example, "Universal_Tiff-B:Export" .
"MIME Type" box
The "MIME Type" (Multipurpose Internet Mail Extensions) box shows the format of the output files.