svn co https://svn.janelia.org/penglab/projects/vaa3d_tools/released_plugins/v3d_plugins/montage_image_z_sections

   Usage : v3d -x montage -f mtg -i <inimg_file> -o <outimg_file> -p <b_draw>
     p_draw      whether to draw lines in the montage image, 0 for not, 1 for draw, default 1
   e.g. v3d -x montage -f mtg -i input.raw -o output.raw -p 1

   Usage : v3d -x montage -f rmtg -i <inimg_file> -o <outimg_file> -p <b_draw> <c> <r>
     p_draw      whether to draw lines in the montage image, 0 for not, 1 for draw, default 1
     c           numbmer of column blocks, default 7
     r           numbmer of row blocks, default 7
   e.g. v3d -x montage -f mtg -i input.raw -o output.raw -p 1 7 7