This is just one of over 75 professional audio mixers covered in The Mixer Output Guide, which describes direct outs, inserts, hidden mods and more. To see the rest, and for definitions, visit The Guide.
Direct Out:
1/4", post-fader (internally switchable to be post-pad, post-gain, pre-EQ, pre-HPF)
Insert:
Separate TRS jacks, switchable post-EQ/pre-fader OR pre-EQ/pre-fader via "Insert Pre" switch
Gain Control of Direct Output: