The Sub Page widget in an alias.

Sometimes we want to create an alias to a subpage link as follows: [[click here][^SubPage]].

Page creator.
Page name.	Page contents.	Page attributes.	valid?
SuperPage	[[tag][^SubPage]]		true

Response Requester.
uri	valid?	contents?
SuperPage	true

The widget should translate into a ? link of the form:

• tag<a href="SuperPage.SubPage?edit">?</a>

Response Examiner.
type	pattern	matches?	value
contents	tag<a href="SuperPage.SubPage\?edit">\?</a>	true

If the sub page is already present, then the widget should translate into a normal link.

Page creator.
Page name.	Page contents.	Page attributes.	valid?
SuperPage.SubPage	nothing		true

Response Requester.
uri	valid?	contents?
SuperPage	true

Response Examiner.
type	pattern	matches?	value
contents	<a href="SuperPage.SubPage">tag</a>	true