Is there a standard punctuation that should follow "that said"? For example:
I use "that said" a lot. That said, I just do what I've always done.
I have always used a comma after "that said", ignoring Microsoft dictionary's insistence that it is incorrect (I get a green underline under the comma). A co-worker saw this recently though and said it should be a semicolon. As in:
I usually use a comma. That said; a semicolon makes Outlook happy.
Sure enough, this removes the green underline. But this look incorrect to me. I would almost be happier with no punctuation at all.
Is there a standard way this should be done?