[Plugin: SubHeading] Data location?

Where does the SubHeading data reside? Is it appended to a particular table or is one created to contain all the information? I want to make sure that I am able to retrieve the data that would be entered into the SubHeading since I am planning on importing previously-entered data into the new field.

I was not able to find an answer to this within the plugin’s documentation, so I apologize if this is answered elsewhere.

https://www.ads-software.com/extend/plugins/subheading/