4EXT - How do you do a backup/restore?

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http://androidforums.com – Hello all, I recently installed 'midnightrom' (S-on) and Im loving it. Id like to make a FULL backup image of my device using 4ext (full version). How do I do this? The website is vague. What I would like is a full backup of everything so that if I try another rom and dont like it I can always restore back to the EXACT spot I am now. I used nandroid on the Triumph and that was great at creating a simple restore copy of each of my roms. I could boot in and out of various roms with ease. Will 4ext do this? Is there an easy 'rom manger' that will work in this scenario? Thanks! (General)