objext and data definition

what would be the

Dloc or delta loc definition - what does it represent

and how do you write a command to get the info on the bouding box
in a way to transfert the infor into a variable like X= object.boxX or something like that?

and is there a way to tell if an object has been edited or not?
because then we loose the info on the real dimensions of the boejct
and is thre a way to get these new dimensins and i don’t mean the mesh info more like the bounding box dimensions
i think by analysing the edges you can arrive at determining theses dimensions but takes a lot of code to fihd it!

Thanks