@@ -140,7 +140,7 @@ this arch is a typed document.
140140
141141A logical document type is called a `++mark`. A mark is a
142142symbolic pointer to a Hoon source file, in the same dome, for an
143−engine for an engine that can validate, compare, and/or convert
143+engine that can validate, compare, and/or convert
144144documents of that mark.
145145
146146Let's go over arches and marks a little more closely...
@@ -998,7 +998,8 @@ from Unix.
998998There's obviously a lot of fun here! There are two things you
999999can do right now.
10001000
1001−One, talk about `%clay` on the [forum](http://urbit.org/fora) or
1001+One, talk about `%clay` on [this forum
1002+thread](http://urbit.org/~~/fora/posts/~2016.10.25..17.37.47..6937~/) or
10021003on [:talk](http://urbit.org/stream). Both hosted on Urbit
10031004itself!
10041005