+ selector

Not at all supported by Netscape 4, Explorer 5.5 and 6 on Windows and iCab.

Omniweb selects the pre.

Explorer 4 and 5.0 on Windows select all paragraphs.

Selects an adjacent element.

Testsheet:

pre + p {font-style: italic;}

The pre + p selector means "each P element that is preceded by a PRE element". So this paragraph should be italic and the other P's on the page shouldn't be.