Pioneer Dj DDJ-FLX4 Portable 2-Channel rekordbox DJ and Serato Controller (Graphite) - Manual (Page 23)

Part names and functions
23
En
[SHIFT] + press:
Enters Key Shift mode.

Read more: Using Key Shift (page 99)
12 Performance Pads
Press:
You can use Performance Pads to trigger various features.

Read more: Using the Performance Pads (page 92)
13 PLAY/PAUSE  button
Press:
Plays/pauses a track.
[SHIFT] + press:
Returns to the temporary cue point and playback starts (Stutter).
14 CUE button
Press:
Sets, calls up, and plays a cue point.
• Press the button when the track is paused to set the cue point.
• Press the button when the track is playing to return to the cue point and
pause. (Back Cue)
• Press the button and hold it after the track returns to the cue point and
playback will continue until you release the button. (Cue Point Sampler)
[SHIFT] + press:
Returns the playback position to the beginning of the track.
15 SHIFT button
Press another button while holding the [SHIFT] button to use a different feature
assigned to the button.
Serato DJ Pro