Relative Passability (Yellow tiles when you hit ctrl + h)

[fillyra]

When you use ctrl + h to see the passability map in the editor, how do you make relative passability squares?

From the manual:

Use the key combination Ctrl-H, to see the passability map. Yellow squares on the surface are the area of ‘relative passability’, the hero will hardly get inside. To escape problems don’t make yellow squares adjacent in the area, which is supposed to be passable.

You can only paint the regular passability or erase it with the logic brush. How do you make and erase the yellow squares of relative passability?

See the attached photo for what I mean.