be utilized to encode the first entry for pixel run 311 relative to reference node 310 the left hand boundary of pixel 311 can thus be encoded in table 800 as follows sub table 822 indicates that for stroke number 1 see column 810 row 1 corresponds to pixel run 311 see column 812 and applying vertical mode the left hand end of pixel 311 is one unit to the left of the left hand side of reference node 310 thus a resulting value of u2212 1 vertical is recorded in column 814 this data is finally translated into a binary value using modified huffman coding and placed in column 816 as u201c 010 u201d after a corresponding entry for the left hand side of pixel run 311 has been made the positions of pixel parameters a 0 through b 2 are shifted to the right because pixel run 311 has not yet been coded twice this condition is shown in fig7 b and in order to encode the right hand boundary of pixel run 311 pixel parameter a 1 is coded relative to b 1 in a vertical mode note that coding a stroke of a connected component 300 deals repetitively with two single overlapping pixel runs as long.