| navigation keys to select (highlight) text, which |
| then enables the copy and cut functions. |
| - In markable lists, using Edit key together with |
| navigation keys allows the user to mark several |
| items of the list, then a function can be executed on |
| all the marked items as one operation. |
| The Edit key is handled in a special way: the primary |
| action (editing options menu) is opened from the |
| key release event, not the key down event as it |
| would usually be. This is to enable the mark/select |
| function where the key is being held down as a |
| modifier key. |
| (See sections Editing and Lists and Grids for more |
| detailed descriptions on the select and mark |
| functions.) |
Power | - Turns power on and off. This requires a long key |
| press. |
| - Opens the Profiles menu for switching active |
| profile. |
Navigation
The model of navigation is based on states arranged as hierarchical trees, familiar from existing UI concepts. A few added features bring in new flexibility:
Tabs
Applications key and the Application shell
Direct navigation between sibling folders
Links to applications and documents; Pinboard These features are described in the following sections.
Navigating in applications
The traditional hierarchical tree structure forms the basis for navigation. The user can move forward from one node (state) by opening an available item or selecting an option from a menu. Back function (available in the right softkey Back) returns to the previous level in the hierarchy. In the initial state of an application (number 1 in the figure below) the Exit function replaces Back in the right softkey; it closes the application.
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