Topic, Level "A Thin Line...", game "Path 4 Mouse"

  So how do you do thin lines?
edit:
When you finish there is just a Thin blue line...

  Oh I did this in a level, only it was with curved lines!

  Whoa, that's neat!

  The thin line is a very nice idea, pity it is almost invisible in this level because it is so full (and actually uselessly too long).
And it is impossible...