Note: Depending on your implementation, you may have more icons or fewer icons available to you in the Rich Text Editor. There are several third-party tools that integrate with the editor and display as additional icons in the editing toolbar (e.g., equation editors, video management applications, etc.). Also, some institutions hide seldom-used icons to make the appearance of the editing toolbar more compact.
Standard Rich Text Editor icons allow the following features:
Insert special character

Inserts symbols & special characters (accented characters, trademark, currency symbol, etc.).
Insert CKAwesome

CKAwesome allows you to easily insert a Font Awesome icon into your text in CKEditor.