On Wed, 14 Aug 2013 15:08:47 +0100, David Hill wrote:

I wonder whay they don't build their shacks with windows? I guess
they
are so packed together that light doesn't penetrate to the sides
very
much.

the cost and availability of glass?

Why do you need glass? Clear or translucent plastic sheet or opened
out bag would do. Opaque one for a curtain.

--
Cheers
Dave.