How do I reset a port's options

[albi at scii.nl]

On Mon, 29 Aug 2005 16:29:34 -0400
Trey Sizemore <trey at fastmail.fm> wrote:

> I've tried to google for this, but I'm not entering the magic
> combination of words.  When I go to install some ports, I'm presented
> with an ncurses screen that let's me toggle options.
> 
> If I select some options and the build fails, how can I "reset" the
> port so that I'm presented with the options again?

for example like this :
cd /usr/ports/net/samba3
make rmconfig

(you can also look in /var/db/ports and delete/change files)