So. Some themes have objects that seem to be large natural extensions of the landscape. Masks allow maintaining that. Lemme know if it doesn't look good. If it doesn't, can still use for ice/bounce/indestructible. Indestructible bunker object for example.
# FreeType 2 src/bzip2 Jamfile
#
# Copyright 2010 by
# Joel Klinghed
#
# Based on src/lzw/Jamfile, Copyright 2004, 2006 by
# David Turner, Robert Wilhelm, and Werner Lemberg.
#
# This file is part of the FreeType project, and may only be used, modified,
# and distributed under the terms of the FreeType project license,
# LICENSE.TXT. By continuing to use, modify, or distribute this file you
# indicate that you have read the license and understand and accept it
# fully.
SubDir FT2_TOP $(FT2_SRC_DIR) bzip2 ;
Library $(FT2_LIB) : ftbzip2.c ;
# end of src/bzip2 Jamfile