This is a practical, self-describing example of a Twin Page.
If page A is a twin to page B, then it should go without saying that B is a twin to A. Some wikis support a Technology Solution of "Twinning" wiki pages. Most of them don't, so it's up to the users to create Twin Pages.
Unfortunately, not all wikis allow information hiding like the convention in usemod-type wikis, e.g., usemod.com 
on Meat Ball.
Fortunately, Wards Wiki at least allows information hiding by iconising the link. (or does it?)
Please add user-defined links to other wikis, containing the same name Twin Page to realize at least a Wabi Sabi form of "twinning" wiki pages ;-).
Thank you. -- Fridemar Pache
An equivalent concept on Wards Wiki is the Sister Site. However, this is set up by the server admin, and applies to all pages with the same names between the two sites.
Actually it is a misnomer. Metaphorically spoken: Sister Sites cannot have Twin Pages (aka twins) in common; at best they could be related by Twin Wikis. As suggestion for a more stringent name for the involved wikis, the term Twin Wiki is used. A Website can have many wikis, some wikis with and some wikis without being a Twin Wiki to some internal or external site. With this suggested name, we could discriminate user defined Twin Wikis from provider defined Twin Wikis -- Fridemar Pache
Notice: Twin Page is a misnomer like Sister Site. In the newer formulation a Twin Page is a "Namesake Partner Page". ''This is a horrible name, that is better expressed with the pseudo-icon "<=>".
Or in tradition with Mathematical terminology, we could replace the name Twin Page by Strong Partner Page.
Instead of struggling for better and better terms, we propose to use language independent pseudo-icons "<->", "<=>". As soon as the wiki communities use these nearly self-explaining pseudo-icons, there is no need for further efforts to find adequate names (in different languages). The more pages there are, the more you get the feeling for the usefulness of this simple device (I hope).
<=>
<->
See original on c2.com