From The Pavilion

xhogaux wrote:

38.2 . Swain to Costigan : Big appeal for LBW by Swain as everyone else joins in. It looks very close but the umpire says not out. They've called for the review and it looks to have struck him just outside the line, no more there a millimetre in it. So it stays not out. There is a fine line between pleasure and pain.

I know there's an LBW line that goes along the lines of the batter channeling his inner watson and asks for the review and the umpire says there aren't any reviews here, so I can imagine it would be stupid to show both lines in the same match. Also hypothetically every single dot ball could use this line, that also would look stupid. I don't think any commentary should involve a review like this as it opens up a rather large can of worms