binary data color-look-up table channel pointer four-byte channel picfile data structure type bitmap s type dump s type float s type runcode s Picture File Format and I/O Library g The File Format s Picfile Library CCITT FAX format attribute s Picread s picwrite s PICFILE data s Picopen_r s picopen_w s Picclose s Picputprop s Picgetprop s PIC_SAMEARGS s Picunpack s format s picpack s channel_pointer pictell s CHAN attribute s CMAP attribute s COMMAND attribute s NCHAN attribute s TYPE attribute s TYPE=bitmap s TYPE=ccir601 s TYPE=ccitt-g4 s TYPE=dump s TYPE=runcode s WINDOW s picfile.h digital images image-processing picture file