Find list of lines that are under a line

Hi, I am just wondering if anybody could point me to a component or give me an idea how to find list of lines that are under a line. I have a mesh and I would like to draw a line along a mesh line and I want to automatically find the lines which are over under my new line (they are coincident).

Question.gh (10.2 KB)

Like this?

question_reV1.gh (15.9 KB)

Brilliant. It works very well. I never thought of it like you did. Thanks. Manoo