Stone walls?

[Cassey]

Hi, just came back after my 6 year old son asked me to help him play.  We were playing Alpha 6, so I finally unzipped Alpha 7.

Having a bit of a UI issue - keep wanting to build thing, UI keeps wanting me to select Silver, Metal or Wood, but besides that...

What happened to stone walls?  I have stone-cutting researched, but I don't see the option to build Stone Walls, or research it?

[Karn]

Hi, you need some stone blocks. When you have them, option to build stone wall will appear.

[Cassey]

Yep.  Thanks.  Just figured that out...