We all know what a hyphen is; it cohabits with an underscore, sharing the same key on the standard english language keyboard.
But what about its less identifiable cousins, the en-dash and thee m-dash?
They are so called because of the length of a dash, being the same as the width of the respective letters n and m.
underscore _
hyphen -
en dash –
em dash —
Typically the american preference is for an em dash without a space, while the UK traditionally uses a spaced en dash.
An example of this—for example - would be the preceding.
A hyphen, on the other hand, serves to join together two words, to create a compound of double-barrelled word.
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