Flag to avoid inadvertent editing
https://gyazo.com/1eddb11ea0cf750601cfcac997228aee
The mechanism was that if you moved the slide here to a hole in the ground, the writing would not be done.
Image Source
https://gyazo.com/90d6850687c6f4394e04cccb64d258f5
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This page is auto-translated from /nishio/うっかり編集しないためのフラグ. If you looks something interesting but the auto-translated English is not good enough to understand it, feel free to let me know at @nishio_en. I'm very happy to spread my thought to non-Japanese readers.