Hall - Super long ambient wash with the ability to add octave regeneration in the feedback loop.  More than shimmer - it's more like ascension shimmer.

Reverse - This is not a true reversed reverb as it reads through a delay line at various points in the delay while increasing in volume.  This is where it gets really cool.  The vibrato in this mode is envelope controlled. The range runs from 0 to 50ms of time shift.  Tone control is loosely based on the Jazzmaster rhythm tone control with a low pass filter centered at 156.6Hz  Strum hard and it pitch bends like you are playing the trem bar on a Jazzmaster or Jaguar!  Combine the two for an unreal dual-guitar player effect!

Soft Focus - Because all of the reverbs can go All-Wet by means of the Blend Control, this is a great approximation of the lush and surreal Yamaha FX500 patch. Soft Focus Reverb features a dense reverb with two delays in parallel (one set for 250ms, the other set for 380ms.)

Grabs you by the fuzz.  When you're a gazer, you can do those kinda things.