How can I close Visual Studio's dockable windows with my keyboard?

Question

It's kind of annoying to have to use my mouse to close the windows that appear when when summoned by my keyboard e.g. I find usages of an object by hitting Shift+F12, or any of the other dockable windows that appear for various other reasons.

Ideally these would close when I hit escape, but this does nothing. Alt+F4 wants to close the entire visual studio.

Is there any keyboard shortcut to close these windows?

To be clear, this is the kind of window I'm referring to:

Answer 1

According to Default Keyboard Shortcuts in Visual Studio 2015, you can use the following:

• Shift + Esc - Window.Close (window must have focus)
• Ctrl + F4 - Window.CloseDocumentWindow to close the current tab