Another follow-up from yesterday's doc reviews

[Eric Timmons]

On Thu, Sep 22, 2016 at 4:18 PM, Eric Timmons <etimmons at mit.edu> wrote:
> As I understand it, the issue isn't really with the DEFSYSTEM form
> itself. Instead, the issue is with all the *other* code that could be
> in the .asd file as the manual states that symbols from CL, ASDF, and
> UIOP will all be available inside an .asd file without an IN-PACKAGE
> form.

Oh, and also about making sure DEFSYSTEM itself doesn't need to be
prefixed with a package.