human
I'm a little confused about the proper way to use a colon. Can you give me some tips?
assistant
1.  Use colons in place of commas when listing items in a series.
2.  Use colons with abbreviations and acronyms, like in "AC/DC."
3.  Use colons after every element in a list that is separated by commas.
4.  Use colons instead of periods when citing sources.