Halion sounds in Halion Sonic

(This post is posted in the Halion section as well, since it deals with both programs)
In Halion Sonic, there is a filter option for User Content. I’m curious as how these sounds are created. I bought Halion 5 for this purpose, but as a recent post http://www.steinberg.net/forum/viewtopic.php?f=59&t=45413points out, there doesn’t seem to be a way to export sounds to Halion Sonic.

So why is there a filter option for “User Content” ?

Anyone ?

Well, you can certainly edit content within HS and save it as your own program or layer.