Piston to deck clearance 360

Ok rustyrat, I know you think me stupid, so I am gonna ask another?. Is the Mopar 4" crank measured by adding .21" thow twice equaling .42" / 4" - 3.58" top to bottom stroke. Or is the 4" crank made by putting all .42" on on the crank thow equaling .84" if measured bottom of stroke to top of stroke?