OmniWeb document types (mime?)

[Kevin John Wang]

I was thinking about making OW a menu-ish type front end for our NeXTs, such
that new users who log in for the first time will auto-launch OW, and then you
could click on various different things and it would launch the
appropriate program.  However, I can't seem to do it (lynx has a custom
extention of "lynxexec".  I was thinking that it could be done with a mime system.
>From what I understand of mosaic's mime.types file:

># example mime.types file.
># see the NCSA X Mosaic documentation at
># http://www.ncsa.uiuc.edu/SDG/Software/Mosaic/Docs/extension-map.html
># for more details
>
>application/postscript         ai eps ps       

>application/rtf                rtf             

>application/x-tex              tex             

>application/x-texinfo          texinfo texi   

>application/x-troff            t tr roff       

>audio/basic                    au snd          

>audio/x-aiff                   aif aiff aifc
>audio/x-wav                    wav             

>image/gif                      gif             

>image/ief                      ief             

>image/jpeg                     jpeg jpg jpe
>image/tiff                     tiff tif        

>image/x-xwindowdump            xwd             

>text/html                      html            

>text/plain                     txt c cc h
>video/mpeg                     mpeg mpg mpe    

>video/quicktime                qt mov          

>video/x-msvideo                avi             

>video/x-sgi-movie              movie           


might I be able to do something like:
application/nextapp             app           ????????

or have an "exec" function, where it does the equivalent of "open"?

   - Kevin