When double-clicking on the tab in the middle region, it will automatically switch on both sides of the floating panel, or the corresponding operation. At the same time, these operations can also View menu operation.
In addition to these major interface elements, as well as some of the dialog box and other elements, in addition there is a hidden panel, known as a batch operation panel, when the notes are selected, the panel will naturally appear in the upper part of the status bar, the panel is generally user operation after hidden.