What does the Flipped Input option do in Cave Story+?

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In the options menu for Cave Story+ on Nintendo Switch, there is an option labeled Flipped Input. I didn't see an explanation in the game's manual and, as far as I'm aware, this option is not available in any other version of Cave Story.
What does the Flipped Input option do?
Screenshots for comparison:
Cave Story+ (Nintendo Switch):
Cave Story+ (Steam):
Pictures about "What does the Flipped Input option do in Cave Story+?"



Is Cave Story Plus the same as Cave Story?
Cave Story+ is a Cave Story remake for PC, Mac (now defunct), and Nintendo Switch developed by Nicalis and Pikii. It was released on Steam on November 22, 2011, to the Mac App Store on September 7, 2011 and to the Epic Games Store on December 3, 2020.How many levels are in Cave Story?
15 levels to explore in the vast world. 10 unique weapons to find and upgrade. USB controller compatibility. Four unique endings.How long is Cave Story?
When focusing on the main objectives, Cave Story+ is about 6\xbd Hours in length. If you're a gamer that strives to see all aspects of the game, you are likely to spend around 10 Hours to obtain 100% completion.What system is Cave Story on?
Cave Story 3D is a 3D version of the game developed by Nicalis and published by NIS America as a retail title for the Nintendo 3DS. It was released on 8 November 2011 in North America, 11 November 2011 in Europe and 26 July 2012 in Japan.Episode 5 - Reconstructing Cave Story: Keyboard Input
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