Portals vs Windows

A portal is not like a window, which represents a dedicated link between a section of screen and a specific thing (eg: a Unix shell in X-Windows or a directory in the Macintosh Finder). A portal is, rather, a view onto the infinite Pad++ surface; links to specific items are established and broken continually as the portal's view changes.

Also, unlike windows, portals can recursively look onto other portals - you can get some pretty interesting effects with portals:

We will discover more about portals later. First, lets look at hyperlinks.

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