black&white picture digitized image g picture file editor g control flow s file name s Builtin Procedures s Command Summary s frame buffer three color channels s window S header s $0 S $1 S CW X S CW Y S CW Z S ^ operator p append s .blu S color S cmap S composites s execute S fflicks S get S global S .grn S new S nocolor S old S quit command p .red S w - S CW w S /usr/lib/pico/defines S Pico \(em A Language For Composing Digital Images g Black&White Images s New and Old s Color Map Read, Write, and Windows s Programs s Array Indexing and Control Flow Defaults s Procedures s Non-Interactive Use of \fIPico\fP s picture composition g picture file format /dev/om0 c arithmetic operators s color composite exclusive or s xclamp S yclamp S flicks S 5620 630 ~getting ~executed statements s double quotes s delete s default s ~predefine def S ~reading ~to read read s