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Work
Area Hierarchy 
Using this function you can determine the hierarchical relationships of a work area to other work areas. The result is shown in the form of a tree as the work area hierarchy.
You can use the work area hierarchy in a similar manner to the hit list as the central starting point for the various processing functions in work area management. This method of navigation is available not only for the selected work area, but for every work area included in the tree structure.
The system determines the hierarchical relationships for the selected work area by evaluating the Hghr-lvl WA (higher-level work area) field in the header data.
It first checks whether the work area has a higher-level work area and whether the work area is itself the higher-level work area for another work area. If a higher-level work area exists, the system also evaluates the higher-level work areas of that work area, and so on. The relationships determined in this way are shown in the work area hierarchy.
The work area with the highest position in the hierarchy forms the starting node for the hierarchy tree. The lower-level work areas are arranged below this top node in steps. The work area for which you determined the hierarchy is highlighted in a different color.

Which hierarchy position a work area has is specified by the Customizing settings for the respective work area type. For more information, see Specify Work Area Types in Customizing for Industrial Hygiene and Safety.
To navigate within
the work area hierarchy, select a work area in the hit list and
choose
with the
quick info text Work Area
Hierarchy. The tree
structure appears.
To navigate to a further function, select the required work area in the tree. Then choose the required function using the pushbuttons or the menu options in the Goto menu. The selected function is called in the same processing mode (edit or display) in which you called the work area hierarchy.
