Sometimes automatic wrapping is provided. Moving beyond the end of a row moves the focus to the beginning of the same or the next row and vice versa. The same applies to moving beyond the bottom of a column. Whether wrapping is applicable depends on the application. Since it can confuse users if they are not aware of this behavior, we generally recommend to avoid it.
Users enter edit mode by typing into a field or by pressing a key.
Most commonly F2 is used for this purpose. In edit mode, arrow keys are used for navigation within a field. Users can switch back to navigation mode, for example, by pressing Enter or by tabbing to another field. However, this model cannot be used in form-based applications if the form contains components that use arrow keys for internal navigation and that do not support a separate edit mode. Such components are non-editable combo boxes and lists.