This is one of the essential features of the FedWiki, perhaps the reason for its creation.
Of course you can simply e-mail a FedWiki URL to friends. The FedWiki url contains all the pages open at the time you copy it.
You can Fork Foreign Page into your site by clicking on the flag at the bottom right of the page journal.
Any page name or favicon from another site, while being viewed in your site, can be clicked and it will open in your site. **THEN YOU CAN FORK IT BY CLICKING ON THE FLAG ICON NEAR BOTTOM OF THAT PAGE**
Blue halo, indicating a foreign page, will be removed. It is now your page!
Another way to share pages is to open one of your FedWiki sites and another person's FedWiki site. Then click-drag a page title favicon from their site onto your site. If you only have one browser window open you can drag the favicon up to the line of browser tabs, over to your fedwiki tab, hold it their until you site opens then move the favicon down onto your site and let go.
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Every page created in the FedWiki is created to be shared under the Creative Commons Attribution-ShareAlike 4.0. Click CC BY-SA 4.0 just below the Journal on each page.
People in the federation write so that others can use their thinking and extend or rethink it.
The federation has several ways for neighbors to keep tabs on the writing in the federation.