How to create a Personalization in Forms that displays the entire text of a field in a message box?

My users in Purchasing use the Inventory Form: INVIVCSU.  For them, the description is the most important bit of information.  In the standard form, the width of the Description field is severely limited.  As expected, the information that is needed is at the right of the field (hidden in the form display) and requires the users to scroll each line to find if the line is what they are actually looking for. 

Reading the Personalization documentation, I've been attempting to see if I could create coding to make the complete (inventory part description) pop up in a message. This would allow them to cycle through the choices quickly.