In many countries around the world, em dashes also express dialogue!
I grew up reading novels and plays
Inspector Lestrade and Holmes were speaking:
— What’s up?
— Not much
— Cool.
In many countries around the world, em dashes also express dialogue!
I grew up reading novels and plays
Inspector Lestrade and Holmes were speaking:
— What’s up?
— Not much
— Cool.
em dashes are also sometimes used to express interruption in dialog.
"I was thinking—"
"Well, there's your first mistake"
Typographically speaking, it's really a separate kind of dash, a tad bit longer than an en dash. Nowadays it's more often set as an en dash, the em dash is a bit old fashioned for dialogue. But probably this differs between countries.