Knowing how to do a 4WD hill start recovery for a manual is very important, so you can reverse back down a steep hill safely.
If you have a manual 4WD, you should practice how to do a hill start recovery, just incase you are put in a real situation while out on the 4WD tracks.
You might be going up a steep 4WD track, and all of a sudden the track is too steep for your capabilities, or you might have selected the wrong gear to begin with. So, jump on the brakes and stall your 4WD right where it is.
Now you need to how to do a hill start recovery, and get both you and your 4WD back down to safer ground.