How to clean system

[perryh at pluto.rain.com]

keramida at freebsd.org (Giorgos Keramidas) wrote:

> Packages should never install stuff in /usr/bin and /usr/sbin.
> Ports should *only* install files in /usr/local/... There are a
> few ports that includes options to override base-system files in
> /usr but these are the exception.

The doc ports install into /usr (granted, not /usr/bin nor /usr/sbin
AFAIK) by default.  I would not be at all surprised if a few others
did also.