@@ -196,7 +196,7 @@ To assign an alias to a door, we often write the following.
196196```
197197This is the idomatic way to assign the alias `this` to the door.
198198
199−Gall apps have a fixed number of arms, but sometimes you'd like to have more.
199+Gall app cores have a fixed number of arms, but sometimes you'd like to have more.
200200This is where virtual arms come in. We note that it is often better style to
201201compose cores with `=>` or `=<` to add more arms to a Gall app, though.
202202