Sorry I miss-understood what you were looking for, this is beyond my comprehension. I did find something called yEd which might be along the lines of what your

Sorry I miss-understood what you were looking for, this is beyond my comprehension. I did find something called yEd which might be along the lines of what your looking for, good luck in your searching. https://www.yworks.com/products/yed https://www.yworks.com/products/yed