Creating a symbolic link is done in the properties view of the page that will contain the link. There is a form where a user supplies a name for the link and a path for the linked page. When submitted the URL has the following form:

http://host/PathToPage?responder=symlink&linkName=&linkPath=

First we need to create some pages to play with.

Page creator.
Page name.	valid?
LinkingPage	true
LinkedPage	true

Now we create a symbolic link named SymLink. This links LinkedPage as a child of LinkingPage.

Response Requester.
uri	status?
LinkingPage?responder=symlink&linkName=SymLink&linkPath=LinkedPage	303