A picture speaks a thousand words. Use images in your records to immediately draw users attention to important aspects of the information and give them a nice UI experience. Consider the following screenshot. By looking at the priority flag users will immediately know which cases are of high priority.
![Use Images in Records](https://amazon.asagarwal.com/images/2019_04_18_images_in_formula.png)
All you need to do for this is to create a formula field on Case with the following formula.
IMAGE(
CASE(Priority,
"Low", "/img/samples/flag_green.gif",
"Medium", "/img/samples/flag_yellow.gif",
"High", "/img/samples/flag_red.gif",
"/s.gif"),
"Priority Flag"
)
To view other images that Salesforce provides, and they can be used in formulas please visit URL http://help.salesforce.com/HTViewHelpDoc?id=useful_advanced_formulas_image_links.htm&language=en_US