The other more interesting statement on their website is:
The time between a note and its echo varies, depending on the location of the note in the delay buffer (unlike a normal delay, where the time between a note and its echo is constant). Looking at its GUI, it's like a timeline (buffer) starting with zero and ending with the maximum delay time you have set.
Say you set a maximum delay time of 30 seconds, and increase the feedback so the 30 second loop gradually fades out.
If you play something at 0 seconds, then 15 seconds, then at 30 seconds, when the maximum delay time (in this case, 30 seconds) is reached, playback reverses at the 30 second point, so what you originally played in last is now played first (but reversed). Then 15 seconds later, what you originally played at 15 seconds is played back (but reversed). Then what you originally played at the beginning is played back 30 seconds later (reversed). The buffer hits the beginning point, and starts playing forward again, etc. etc. etc., until it all completely fades away.
This is great for improvising with ambient synth sounds at different points in the buffer, changing synth sounds at different buffer times as you're playing. It's almost like an accompaniment providing new textures by the varying delay times going forward and reverse, instead of just a single, static delay time.