According to Wikipedia: The em dash, m dash, m-rule, or "mutton" (—) often demarcates a break of thought or some similar interpolation stronger than the interpolation demarcated by parentheses ...
All of these punctuation marks seem to have the same purpose. Is there any general guideline for picking one for each use case?
In a list of people published in a bulletin, which is correct? We continue in prayer for: Amy B.(cancer), T. Jones(nephew of Tim), Lillie (on the death of her brother), Sally(Nursing Home), ...
When do you use commas and when do you use parentheses to provide more detail about something? For example: The suspect, Tom Wilson, is now being charged with murder. The suspect (Tom Wilson) is ...