Colon

These are the ways to use a colon properly in your writing:

Use case	Example
To introduce unordered lists, tables, or images. Always precede lists, tables, and images with a full sentence.	Use a full sentence and a colon to introduce the following items: Unordered lists Tables Images
To introduce a list within a sentence.	The application can access the following items: the file system, the command line, and other applications.