Thing locations

Is there a way to input the X/Y cordinates for things like vertices?

For vertices there is - right-click on one to bring up it's edit box.

Communication fail :P
I meant things as in the round things in the editor not as a generic noun. Is there a dialog box like the ones for vertices for things? I like to be precise in my placements and if its not a snap to grid location its a real pain.

Got it. There's no dialog box though you can override snap-to-grid by holding a shift key down while dragging and dropping.