What ⇩ means
⇩ shows direction or sequence: “see below”, “continue here”, or a step that leads down. Arrows have long done that job in print. Printer symbol fonts such as Zapf Dingbats carried sets of outlined arrows alongside solid ones. In text, put ⇩ just before the thing it points to.
Don't confuse it with
1Questions people ask
1Why does this arrow look different on another device?
Because each font draws it. The character is identical, but the outline thickness and head shape vary from font to font.
How to type ⇩
⇩\21E9Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

