A PAINTAREA component is an area in which items (component PAINTAREAITEM) and lines (PAINTAREALINEITEM) can be positioned with absolute coordinates (x,y,width,height,z).

It is useful for building simple graphics in which e.g. certain items are positioned on maps.
It contains a lot of prepared functions for editing its content - e.g. for moving/resizing of items, so you can use it as base for graphical editors.

A simpler version of the PAINTAREA which concentrates on the layering of components is the OVERLAYAREA component.