XPath: what does this '*/*' search construct mean?

Question

PHP

Hello!
Tell me, please, what does this search construction mean:
$xpath->query( '*/*' )
specifically, this one: */* - rummaged through all the documentation, did not find anything like it anywhere.
Thank you.

Answer 1

* - denotes any name or character set along the specified axis, for example: * - any child node; @* - any attribute.
/ - defines the level of the tree, that is, separates the addressing steps
. I will assume that this is any object that has the second level in the tree