If you remove existing Pintos code, please delete it from your source
file entirely. Don't just put it into a comment or a conditional
compilation directive, because that makes the resulting code hard to
-read. If you're worried about
+read. We're only going to do a compile in the directory for the current
+project, so you don't need to make sure that the previous projects also
+compile.
@node Conditional Compilation
@section Conditional Compilation