Basic Customization > User Interface Customization > Presenting Information in the UI > Creating Custom Graphical Representations > Reference
  
Reference
This section contains details on the three out-of-the-box graphical representations. The information in this section is provided as background details on how the three out-of-the-box graphical representations (Traffic Light, Progress Bar, and Percent Complete) are configured and implemented. This information can be valuable when creating your own custom graphical representation.
The diagram below is a partial representation of how these classes have been extended to implement the OOTB graphical representations.