[UPHPU] :hover syntax help

[Wade Preston Shearer]

I have never seen the syntax…

#cssnav ul :hover ul


…before today (note the space between the "ul" and the ":hover"). I  
thought that ":hover" had to be applied directly to an element, like  
this…

"ul:hover"


So, what is the author of the above snippet doing? Is it saying  
"address all unordered lists that are children of any element  
currently being moused over that is a child of an unordered list that  
is a child of #cssnav?

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