What are Serato DJ’s INT and REL modes?

The REL mode is a mode in which, when controlling playback and pausing of tracks, the playing speed, etc., from a control CD or control vinyl, the playing position of the control CD or control vinyl is not reflected on the track’s playing position. When using Serato DJ’s hot cue or loop function, use the REL mode, not the ABS mode.

The INT mode is a mode for controlling playback and pausing of tracks, the playing speed, etc., without using a control CD or control vinyl.