Loose Leaf Binding is one of the simplest methods of binding.
Cut pages are punched with holes to accommodate the rings or posts contained
in the binder. An advantage to both ring or post binders is that pages can be
added or removed easily. The ring binder also has the advantage of allowing
the pages to lie flat when the book is open, making it a good choice for technical
or training manuals. An allowance for the inner margin (gutter) must be made
to allow for the holes that are punched in the pages.