steam ovens and apologies for MINT MONT BLANC

When I am baking I have discovered that the steam oven has a setting called professional baking..I made a cake yesterday and today a lemon loaf and C said.. you put the item into the steam without preheating. So I did. The steam come on immediately for a while and then the heat begins. apparently the steam aids in the rising of the item.. obviously would be great for bread making. Anyow.. so far the items have emerged cooked and fine. Interesting eh?