Pro-Soloist includes a full-featured arpeggiator with clock sync, and is independent for each layer when using Double or Split mode.
Effects are also on this panel, and include Distort, Phaser, Flanger/Chorus, Echo, and Reverb, plus a Global Limiter. These can be used in any combination. When in Double or Split mode, effects settings can be global for the entire instrument, or independent for each layer, so it's like having two sets of effects (except for the Global Limiter, which is always global, hence the name...).