= {
" ",
"Usage: bdens [options] input.img output.img",
"-------------------------------------------",
"Calculate density in selected regions of a map.",
" ",
"Actions:",
"-box 12,34,2,45,34,25 Calculate statistics within this box (start and size).",
"-oval 5,10,28,50,22,89 Calculate statistics within this oval (start and size).",
" ",
"Parameters:",
"-verbose 7 Verbose output.",
"-datatype u Force writing of a new data type.",
"-select 1 Select an image (first image = 0; default: 0).",
" ",
"Input:",
"-Mask mask.map Calculate statistics with a mask with any number of levels.",
" ",
NULL
}