What exactly are these arrows? - NISHIO Hirokazu's Scrapbox (Auto-translated from Japanese)

What exactly are these arrows?

https://gyazo.com/a2aeaff69c281763e5e238234fcca3b8

What is this arrow (mark or symbol) to concrete?"

There may be Implicit Resources that are not yet in the language

If the arrow is change, overlay "How does that change occur? / When does it happen?" is valid.

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This page is auto-translated from /nishio/この矢印は具体的には何？. 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.