Arturia BeatStep Pro MIDI/Analog Controller and Sequencer Kit with CV/Gate Cables (Black) - Manual (Page 121)

10.9.1.7. Seq1 Randomize Octave
The Randomness parameter for SEQ1 can be forced to select the same chromatic note but
allowed to select it from a different octave range. To enable or disable this feature, use the
drop-down menu.
10.9.1.8. Seq2 Randomize Octave
The Randomness parameter for SEQ2 can be forced to select the same chromatic note but
allowed to select it from a different octave range. To enable or disable this feature, use the
drop-down menu.
10.9.1.9. Auto-sync
When this parameter is enabled the BeatStep Pro will switch automatically to follow a start
message from the first external clock source it receives.
The clock sources are prioritized in this order: USB, then MIDI, then CLK. If a STOP message
has not been received but the clock is lost, the unit will switch back to internal clock (MIDI
and USB only). The response to CLK mode is different: if the clock is lost, the unit will switch
to PAUSE, and if the START signal is lost, the unit will switch to STOP.
Use the drop-down menu to enable or disable this feature.
10.9.1.10. Mode: Roller/Looper
This parameter determines the functionality of the Touch Strip: either Roller or Looper. It is
also possible to toggle between the two settings from the front panel of the BeatStep Pro
within Control Mode [p.79] using SHIFT and Step button 9. When Step button 9 is lit, Roller
mode is selected. When it is dark, Looper mode is selected.
Arturia - User Manual BeatStep Pro - MIDI Control Center 116