3.1.3.7 Full screen mode

If you find the title bar on a maximised window to be ugly or distracting, you can select Full Screen mode to maximise PuTTY ‘even more’. When you select this, PuTTY will expand to fill the whole screen and its borders, title bar and scrollbar will disappear. (You can configure the scrollbar not to disappear in full-screen mode if you want to keep it; see section 4.7.3.)

When you are in full-screen mode, you can still access the system menu if you click the left mouse button in the extreme top left corner of the screen.