Maybe this will help someone…
Was watching the latest Motor video (Creating the Terminal Box) and I found it interesting that Symmetry was used to center a closed face on a line ( if I remember correctly ). This intrigued me as one of my big frustrations is to center a line on a point or centering sketches in general. I used all kinds of extra lines and measurements to do this and to check that it was correct. Perhaps, it is the new constraint engine with dimension lock in combo with the Symmetry tool that provides enhanced capability. I watched all the demos on the Symmetry tool and it didn’t seem very useful. Just some symmetric lines dancing around.
But let’s say you want to center this square about the origin…