<p><b>@johnmci</b> commented on this pull request.</p>

<p>The apple documents are not clear, one is a test for the state of the view at the moment, the other is a test to see if the window is capable of full screen?<br>
<a class="user-mention" data-hovercard-type="organization" data-hovercard-url="/orgs/Property/hovercard" href="https://github.com/Property">@Property</a>(getter=isInFullScreenMode, readonly) BOOL inFullScreenMode;<br>
The value of this property is YES when the view is in full screen mode or NO when it is not.</p>
<p>NSFullScreenWindowMask<br>
The window can appear full screen. A fullscreen window does not draw its title bar,<br>
and may have special handling for its toolbar.<br>
This mask is automatically toggled when toggleFullScreen: is called.</p>

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