OSX on Mac now allows two apps to split the screen. https://support.apple.com/en-us/HT204948 Doesn't seem to work in Mathematica, even though the full-screen button displays an icon suggesting that it should.


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Update: Mathematica 12.0 now supports this.

You can't. This feature only works with certain programs and as of version 10.4 Mathematica is not one of them. Maybe the coming Mac front end improvement mentioned in this presentation will fix that, but this is purely a guess on my part.

As a workaround you can use window control software such as Spectacle, which makes it easy to arrange notebooks in a similar way to how the split-screen feature would.

  • 2
    $\begingroup$ I would recommend BetterTouchTool for a similar functionality. It is a paid app since version 1.55, but older versions were free if you can find them somewhere. $\endgroup$
    – shrx
    Apr 21, 2016 at 9:50
  • $\begingroup$ Depending in the version, iirc if you start the spilt screen with a different app first, you can then choose MMA...which may be helpful for reading anf programming. However you cant start a split screen with two mma windows regardless of version natively in osx below version 12 $\endgroup$ May 29, 2019 at 13:24
  • $\begingroup$ @morbo That doesn't work for me ... The FE was only ported to Cocoa for M12.0. $\endgroup$
    – Szabolcs
    May 29, 2019 at 13:31

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