Sequence length – Arturia BeatStep Pro MIDI/Analog Controller and Sequencer Kit with CV/Gate Cables (Black) User Manual
Page 104
10.6.3. Sequence Length
Changing the sequence length here affects the SEQ window. For example, here’s how it
looks when the length is set to 12:
The patterns can be up to 64 steps long, and the unused steps are darkened because they
are outside the pattern length area.
The steps are numbered along the bottom of the window:
99
Arturia - User Manual BeatStep Pro - MIDI Control Center