[Shop-talk] marble threshold question

[scott.hall at comcast.net]

this is (or will be, anyway) the shop bathroom: 

under which door parts does a marble threshold go? under the trim, I think, but under the jamb as well? 

and I might have my terminology wrong. I'm about to put down a new floor, and basically, does the threshold go under everything, or does it butt between the jamb (or frame, or whatever I should be calling it)? 

thanks. 

scott