Acolon can introduce a list of items.

Rule 1: Use the colon after a complete sentence to introduce a list of items when introductory words such as namely, for example, or that is do not apply or are not appropriate.

Rule 2: A colon usually does not precede a list unless it follows a complete sentence.

Rule 3: With tabular format, a colon customarily precedes a list.

Explanation:

Hopefully this helps:)