-As we said in the main notes, when M and N are such that there's some P that M
-reduces to by zero or more steps, and that N also reduces to by zero or more
-steps, then we say that M and N are **beta-convertible**. We write that like
-this:
+As we said in the main notes, when `M` and `N` are such that there's some `P` that `M` reduces to by zero or more steps, and that `N` also reduces to by zero or more steps, then we say that `M` and `N` are **beta-convertible**. We write that like this: