The hinge is the joint of the binding of a hard-back book, (where the spine meets the covers). It usually provides additional strength at the flex point. This setting in CoverBuilder is also used for the scores of a paperback book. (The area where the pages are glued to the cover, see screenshot above) The score can be visible on a paperback.
With CoverBuilder you can choose to add (+ Hinge/Scrore) or detract (- Hinge/Scrore) the hinge or score of the board size as shown in the screenshot above. CoverBuilder makes sure you never have to calculate with any values yourself!
This condition is pretty limited to the reproductive system and may have several causes like a result of injury or abnormal the flow of blood within the testicles. Thus, when the muscles within the penile area are relaxed, more blood will type in the penis and an erection will occur.