Disc-binding is a variation of notebook binding that allow pages to be added, removed, and replaced easily.
Now there is an online petition circulating through the pro-ana Web site community to "allow pro-anorexia pages" as well as an online "ribbon campaign" to support the movement.
Like Emacs, Conkeror makes use of buffers in order to allow multiple pages to remain open at the same time (similar to tabs in traditional browsers).
Many paging network operators now allow numeric and textual pages to be submitted to the paging networks via email.
Further developments in printing came in the 1890's, with the invention of linotype and monotype machines, allowing pages to be filled as fast as the machine operators could type copy.
The system allowed pages to be marked "unlocked", or the key to be a "master key".
The filters can be surprisingly sophisticated, allowing certain pages from a site to slip through while blocking others.
The "semi-protection" function and policy, allowing pages to be protected so that only those with an account could edit.
Memory deduplication allows identical pages in memory to be shared.
The extra bits allowed multiple pages to be mapped into the same physical hardware, which also allowed the system to support a wider range of RAM without it being "obvious".
