Shortcuts

Press Ctrl key with left mouse button click to (Or just middle mouse button) :

• Start a new instance of application if mouse is on a application button taskbar
• Pin/Unpin icons in systray (notification area) if mouse is on a notification icon

Others shortcut :

• Show/Hide task : Ctrl+F11 : Ideal to temporaly "disable" taskbar on the monitor to use all screen surface for applications
• Shift+Right click on a app in taskbar to have the choice to kill process (if close does not work) like in taskmgr