This program is part of Netpbm.
pbmtobbnbg reads a PBM image as input and produces BBN BitGraph terminal Display Pixel Data (DPD) sequence as output.
The rasterop can be specified on the command line. If you omit this, the program uses 3 (replace). You can also specify a position in (x,y) coordinates. If you give both, the rasterop comes first. The PBM always comes from Standard Input.
Note that there is no bbnbgtopbm tool.
There are no command line options defined specifically for pbmtobbnbg, but it recognizes the options common to all programs based on libnetpbm (See Common Options.)