Library object are very useful to create nice graphic object to be used many times in the [JSup graphic windows|windows] of the [JSup application].
The usage of the library object is encourage for many reason:
 * Great graphic development '''speed''': design once (slow), use many (fast).
 * High '''maintainability''': you can change a library object and all instance are automatically updated.
== Features ==
 * Library objects are defined in '''special [JSup Library windows|library window]'''. 
 * A library object is a [JSup Binders|binder], at the main level of a [JSup Library windows|library window] with a [JSup Graphic object name|'''name'''].
 * A library object can be [JSup using library objects|used] many times in an application: every usage is called '''instance''' of the library object and every instance can refer different tag/parameters ([JSup Replaceable objects|replaceable objects]).
 * By changing a library object, '''every instance will be updated''' (in an opened [JSup graphic windows|window] a manual [JSup Library object update|library object update] is necessary). 
 * It is possible to parametrize the [JSup Replaceable objects|replaceable objects] used, so every instance can use their owns.
 * Library objects can be composed by other library objects.
== See also ==
 * ++[JSup defining library objects|Defining library objects]++<br/>
 * ++[JSup using library objects|Using library objects]++