Get xml file location for mouse pointer hovering location

Hi, I am very new to Kodi and would like to know if it is possible to display the xml file location of the item my mouse is hovering over in Kodi (Nexus 20) (as I often have no idea where to find xml files for stuff I want to modify).

I saw a tutorial video where this was possible in Estuary using a function called toggledebug ?

Many thanks