Default name of a painter belonging to a matrix and responsible to paint the
area that is frozen both at the vertical start and horizontal start of the
viewport.
Default name of a painter belonging to a matrix and responsible to paint the
area that is frozen both at the vertical start and horizontal end of the
viewport.
Default name of a painter belonging to a matrix and responsible to paint the
area that is frozen both at the vertical end and horizontal start of the
viewport.
Default name of a painter belonging to a matrix and responsible to paint the
area that is frozen both at the vertical end and horizontal end of the
viewport.