Pioneer Dj DDJ-FLX4 Portable 2-Channel rekordbox DJ and Serato Controller (Graphite) - Manual (Page 55)

rekordbox for Mac/Windows
55
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 Cutting the loop
Press the [CUE/LOOP CALL  ] button during loop playback.
Each time you press the button, the loop cuts in half.
• You can cut the loop length in half even during 4 Beat Loop playback.
 Extending the loop
Press the [CUE/LOOP CALL  ] button during loop playback.
Each time you press the button, the loop doubles in length.
• You can double the loop length even during 4 Beat Loop playback.
 Canceling a loop
Press the [4 BEAT/EXIT] button.
The rest of the track continues to play without returning to the loop in
point.
 Changing the loop in point
Press the [IN] button and turn the jog wheel during loop playback.
The loop in point changes.
 Changing the loop out point
Press the [OUT] button and turn the jog wheel during loop playback.
The loop out point changes.