When required, panel specifications are retrieved from a library in the user's current path.
To eliminate overheads associated with retrieving the panel from the library, an in-storage queue of active panels is maintained. When a panel is first referenced it is retrieved from a panel library and stored on the active panel queue.
Thereafter, the panel is retrieved from the active panel queue without reference to the panel's library. If one of these panels is modified (using the online editor), any old copy is removed from the active panel queue so that the next reference retrieves the updated panel.
Note: If a panel library is being shared by more than one product region, a modified panel is only removed from the active panel queue of the product region on which the panel change has been made. The other product regions continue to use the old panel until it is rolled off the active panel queue by other panels being used in the system. The LIBRARY REFRESH command can be used to drop all panels loaded from a library from the active panel queue.
You can create a new panel definition by selecting the Add Panel option from the MODS : Panel Maintenance Menu, or by copying an existing panel definition using the Copy panel option on a list of panels. You can browse, update, delete, list, view, print, rename, and display existing panels using options on the list of panels.