Presentation State (PS) objects serve the following purposes:
- Consistent display of images on various devices and media 
 - Storage of specific settings for display (contrast transformations, geometric transformations) 
 - Storage of annotations 
 - Special display of multiframe images 
 
Presentation State objects do not include actual images, but a reference to one or more images.
Presentation State objects, in addition to LUTs, display parameters, and annotations, contain other tags, such as Patient/Study/Series info, Referenced Image UIDs, etc. ImageGear loads all tags from Presentation State object into a metadata tree, which is available to the application. 
This section provides information about the following: