Since the line in question has not been reported as having been drawn as yet, no doubt there is a Drawing the Line Committee.
On the agenda will be such questions as:
Should we use a pencil, quill pen, biro, felt pen, permanent marker?
What should the line be drawn on such as a sheet of paper, exercise book, wall or something else?
Will it be a straight line, curved or wobbly?
Who will get to draw it?
How long will the line be?
Will it join up with any other lines?
Will the line be thick or thin?
Will it have an London Underground route named after it?
There is just so much decision making to be done which cannot be underestimated.