Is the w3.css class "w3-closenav" documented somewhere ?

[stingray99]

I've spend a fair amount of time looking for an explanation of what "w3-closenav" does !!

 

I see it used in examples and fiddle with it in the examples, however it would be nice if it was listed in W3.CSS references under "classes".

 

I'm I missing where it is explained in english, or is it just not defined anywhere.

 

Any help will be greatly appreciated.

 

Thanks.

 

sg.