Default MIME Types in Mosaic 2.0pre4

application/x-wais-source    -> handled natively
application/x-hdf            -> handled natively (*)
application/x-netcdf         -> handled natively (*)
application/hdf              -> handled natively (*)
application/netcdf           -> handled natively (*)
audio/*                      -> showaudio %s
image/xwd                    -> xwud -in %s
image/x-xwd                  -> xwud -in %s
image/x-xwindowdump          -> xwud -in %s
image/*                      -> xv %s
video/mpeg                   -> mpeg_play %s
application/postscript       -> ghostview %s
application/x-dvi            -> xdvi %d
message/rfc822               -> xterm -e metamail %s

(*) These only apply if Mosaic is built with native
    HDF/netCDF support.

Handling of application/x-wais-source cannot be modified.

Handling of the HDF/netCDF types cannot be turned off if Mosaic is built with native HDF/netCDF support, but can be overridden by a system or user mailcap file.

Handling of the remaining types can be turned off by setting the X resource useDefaultTypeMap to false, or they can be overridden by a system or user mailcap file.

Unrecognized MIME types will, by default, be passed to the "magic viewer" mosaic-internal-dump, which causes them to be dumped to disk automatically (you will be given a dialog box to specify a local filename). You can override this behavior by specifying a viewer for type */* (or *) in a system or user mailcap file.

Any MIME type can also be mapped (in a system or user mailcap file) to the "magic viewer" mosaic-internal-dump to cause it to dump to disk automatically.

For more information on mailcap files and MIME types, see here.