How "Grounded" walls option actually works?

[Satangoss]

Hi there,

I could'nt figure out how "grounded" option actually works in walls shape manipulation.

I was trying to use walls to merge tracks and getting very acceptable results but for do it I need the wall points really stay grounded on track's surfaces.

Even checking points as grounded, it looks like they don't stay so.

Any tips?

 

[R Soul]

It's explained in the Walls - Edit Shape video tutorial, about half way through.