There is now a “Debug console” for Safari, which shows HTML errors when rendering Web pages. Tap “Settings,” then “Safari,” then “Developer”
[Undocumented new features in iPhone software/firmware 1.1.1 – iPhone Atlas](http://www.iphoneatlas.com/2007/09/27/undocumented-new- features-in-iphone-softwarefirmware-111/)
