on Just Publishing Advice:

Colons and semicolons are stronger than a comma
Getting these two punctuation marks grammatically correct in your writing can be a little challenging at first. But it is not that difficult.
They are closely linked to the comma in that they signal a kind of relationship between separate clauses in a complete sentence.
But colons and semicolons each indicate a different type of connection or link.
So how do you know when and how to use a colon or semicolon correctly?
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