Automatic launch of an app via Omniweb

[William Shipley]

Typically you must configure your server to recognize that Mathematica   
(.ma) files are NOT of type text/plain (possibly set them to  
application/x-mathematica, but I'm not positive).

Then OmniWeb will see that it can't display them (it knows it can  
display text/plain, but not application/whatever), and will download the  
file and open it in the Workspace.  If you have Mathematica installed,  
the Workspace will launch it.

This is also true of, say, WordPerfect files, which a lot of people have  
had trouble with.  One thing to note is some (really old) apps don't  
respond to the app:openTempFile: message OmniWeb sends them (they only  
respond to app:openFile:), including WordPerfect.  We have a preference  
called "Save automatically opened files" which really means use the  
latter instead of the former.  The problem with the latter is your  
downloaded files don't get automatically deleted.

-Wil