Window menu is shown when you right-click window title or click window's own icon.
Here you can add or remove items from eXtra Buttons Window Menu.
Window Menu managing
Available items are the same as buttons in eXtra Buttons Set. The list of items consists of 10 eXtra Buttons Menu items and a Separator. Each of items can be used in Buttons set only once and Separator can be used multiple times.
For managing Window Menu you may use buttons Add, Add All, Remove and Remove All.
You may also use drag-n-drop.