2 questions about blinds

[Deleted]

I'm having a little trouble findng bamboo blinds I like in my budget to fit a window (50Lx31W). Is it weird for the blinds to be on the outer part of the window frame or should they always be inside the window frame casing? 

Also, what does it mean when a blind is cordless?  Does that mean it's the kind that you pull down to release it so that it will roll up itself?

[TBM]

You can have them cut to size, or cut them yourself.

We have hung them both ways. We don't have any trim on our windows to consider though...and we have both bamboo blinds and curtains.