I am unsure when to use comma and when to use dashes when writing parenthetical elements in as sentence. For instance:
- He answered - or at least he tried to answer - the question correctly.
- He answered, or at least he tried to answer, the question correctly.
How do I choose between these two constructions?
I am also wondering whether I can mix between commas and dashes in the same text? I should obviously use the same symbol around the same parenthetical element, but what if I introduced another parenthetical element on the next page in the same text? Could that be using commas if the first was using dashes?