Is that different than a normal dash (which can also be depicted by two hyphens)?
Is that different than a normal dash (which can also be depicted by two hyphens)?
Yes —
https://www.merriam-webster.com/grammar/em-dash-en-dash-how-to-use
I write a lot in LibreOffice Writer. It can convert two dashes to em using :--: . It'll autocorrect to em.
:---: