Toon lines are Paint Effects strokes,
so you can hide them using any of those related methods, or you
can turn off the Display In Viewport option
in the pfxToon node. For more information, see
Troubleshoot toon lines.
To
hide toon lines
Do
one of the following:
Select
the toon lines you want to hide and, in the pfxToon node, turn off
the Display In Viewport checkbox.
In
the panel menu, select Show > Strokes to
unchecked.
To
show toon lines
Do
one of the following:
Select
the geometry containing toon lines you want to show and, in the
pfxToon node, turn on the Display In Viewport checkbox.