Help:Link/one/two/three/four

Notice, on the upper left of the page, the breadcrumb navigation links leading to the rootpage.
Observe what happens to the current value of [[../../../]] at Help:Link/one/two.

{{Subpage help}}

Equality	Variable name	Current Value
On subpages. Add the : and / chars.	fullpagename	Help:Link/one/two/three/four
	namespace:basepagename/subpagename	Help:Link/one/two/three/four
	../subpagename	Help:Link/one/two/three/four
On subpages. Add the / char.	pagename	Link/one/two/three/four
	basepagename/subpagename	Link/one/two/three/four
On root and 1st sub/page.	basepagename	Link/one/two/three
	rootpagename	Link
On subpages. Links as its nav links do.	[[../]]	Help:Link/one/two/three
	[[../../]]	Help:Link/one/two
	[[../../../]]	Help:Link/one
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