Equivalent of CSS multiple selector in XPath

Question

Is there some kind of CSS multiple selector (comma) in XPath, so I could find fetch, say, //img and //*[@background] elements in one query?

Answer 1

There is an or operator (|) in XPath:

//img|//*[@background]

Answer 2

In addition to the "union" operator | which exists in XPath 1.0 and 2.0 there is also the "comma" operator , in XPath 2.0 to form a sequence of items e.g. //img, //*[@background].