There's a difference between doors and windows on maps. Other than that, I'm not really sure I understand what you're getting it.

You could try taking a picture/screenshot, and putting it in the thread here, to show exactly what you're talking about.

Or, reference a specific location on a specific map if you can.

For the most part though, all doors are exactly the same, and have the small blue boxes across the opening. If they don't have the small blue boxes (terrain markings) then they are not a door.

Some doors have an actual picture of a door (long and thin, grey/white rectangle) underlying the blue dashes. Other doors have nothing pictured under the blue dashes to differentiate them from the surrounding terrain. Still other doors have a series of boxes painted under the blue dashes. This gives the effect of a door made out of bars--much like a portcullis or jail cell (unfortunately, I don't have my maps handy right now, so I can't point you to an example). My friends and I have assumed that the artwork has no bearing on the function of the door, but that's what I wanted to verify here. And I'm guessing from the "blank looks" I'm getting (and EmperorDragon's response), that the artwork, indeed, has no bearing on the function of the door (in other words, there's no such thing as a holding cell door or portcullis that provides cover and still allows commander effects and gunfire through while barring movement).

The mention of windows intrigues me though. I've not heard of windows in maps. Please tell me more.

And thanks for the replies!!

scenario play is fun, especially if you want to incorporate windows.

Would you recommend one mission book over the others?

Up until 6 months ago, i was using windows like doors (only the openeing and closing part) for attacking and such.
the streets map is what got me thinking that i had to find out for sure.