Hi, I think trace length matching is important for more complex designs involving DDR. How it could work: 1)"blindly" trace 2) Select the traces you want length matched 3) Enter the length value you want The engine should understand that multiple wires are selected and apply the same length to all. It should do serpentine according to the angle and diameter given below the length in a text box. (Add those two boxes too). That way, DDR layout without other package need (Kicad...) and enjoy ;) If you need more info, please ask Cheers