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By double-clicking an item or hitting the Enter key on an already selected item (- a second time, because you already hit it once to select it first), a separate window opens, which shows an edit or inspection view of the item depending on the permissions of the logged in user.
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All columns except the "Page name" and the column containing the checkboxes can be visible or hidden. Additional columns not initially visible may be available for offered for display by the tree view.
Columns are shown in a configurable order, but the "Page name" and checkboxes column are exempt and have to remain fixed at a fixed their initial position.
When using the keyboard, the column order and the hide/show settings of a column must be specified on a separate settings page still to be defined.
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Both input methods (mouse and keyboard) must be largely equivalent, mainly for accessibility reasons. But using the keyboard must also be regarded as the input method of choice for power users and thus must be fast and convenient for typical day-to-day operations.
The display tree view must perform well even for very large sites. To achieve this, pages should only be loaded as they become visible. A visual indicator must make clear that additional data is being loaded from the network.
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