[webkit-dev] Avoiding unstable versions?

I just did my daily update, build and run-safari on WebKit and it seems to have some layout issues and debugging code left in (lots of blue outlines around things): e.g: www.apple.com currently looks like this: http://www.softchaos.com/wkissues/01.jpg 1. Is there a way to avoid updating to incomplete/unstable checkins. i.e are there any tags that are applied to the cvs repository when it is in a known 'good' state. 2. For future reference, what is responsible for turning those blue outlines on/off. They would be useful at times. Matt Gough Softchaos Limited