I wrote for a magazine during college days a few decades ago that uses the Chicago manual of style. I still use em dashes, en dashes, and hyphens regularly. The

I wrote for a magazine during college days a few decades ago that uses the Chicago manual of style. I still use em dashes, en dashes, and hyphens regularly. They don't show up as such in markdown, but they are effectively: one dash for hyphen, two for em-dash, and one with spaces surrounding it for en dash.