I am so very happy for you JP!!! Oh my goodness if someone told me I could no longer eat bread I would FAINT fast away! I can certainly understand your happiness in owning a bread machine:)
IC, I use my bread machine all the time - I haven't bought a loaf since March last year when a friend gave me her old machine.
When I make Challah, bagels or French bread with it, I stick all the ingredients in and use it to do the kneading and first rise for me. I score the French bread before it goes in the oven, but not the Challah (but it's braided - so maybe has enough surface area to vent?)
When I bake (sorry - IT bakes) a loaf of bread from start to finish, it just comes out fine without me scoring it, but does emit a lot of steam when it comes out. Also, if I don't take it out of the machine withing about an hour, it turns soggy and yucky.
So - that's probably your answer.. It vents when it comes out of the machine.
When I make Challah, bagels or French bread with it, I stick all the ingredients in and use it to do the kneading and first rise for me. I score the French bread before it goes in the oven, but not the Challah (but it's braided - so maybe has enough surface area to vent?)
When I bake (sorry - IT bakes) a loaf of bread from start to finish, it just comes out fine without me scoring it, but does emit a lot of steam when it comes out. Also, if I don't take it out of the machine withing about an hour, it turns soggy and yucky.
So - that's probably your answer.. It vents when it comes out of the machine.
Mine has baked a perfect loaf, every time, so far. 
Apart from being too hot. It comes, ready to eat, immediately. I love the first crust, still warm, spread with honey.
My daughter doesn't have a machine. But still turns out the most amazing loaves, and rolls. All made by hand.
LOL. She keeps sending me pictures, on her cell phone.

Apart from being too hot. It comes, ready to eat, immediately. I love the first crust, still warm, spread with honey.
My daughter doesn't have a machine. But still turns out the most amazing loaves, and rolls. All made by hand.
LOL. She keeps sending me pictures, on her cell phone.
The only vent in bread machine bread is from the bottom where the paddle blade is. Once removed from the bread pan there is an ugly hole where the blade went. They actually provide a tool to remove the paddle from the bread since it comes off of the shaft and remains in the loaf about half the time. Once sliced the middle 2 or 3 slices have a notch in the bottom from the blade. Really doesn't bother me.