HP LaserJet 4100 HP PCL/PJL reference (PCL 5 Printer Language) - Technical Ref - Page 126

PE, Polyline Encoded This command incorporates the PA, PR, PU, PD, and SP commands into an encrypted format that substantially decreases the size of your file and the time required for data transmission. (This command is especially useful when using an RS-232-C interface.) PE [flag[value]]|coord_pair...[flag[value]]|coord_pair; or PE; Note Parameter values are self-terminating; do not use commas with this command. Also, you must use a semicolon to terminate PE. Parameter Format Functional Range Default flag character or '7' no default value coordinate pair character character flag dependent* -230 to 230 -1 no default * Refer to the table following the parameter description. Lines are drawn using the current line type and current units. The printer draws to all points with the pen down unless a pen up flag precedes the X,Y coordinates. If the final move is made with the pen up, the pen remains in the up position; otherwise the pen is left in the down position. The PE command causes the printer to interpret coordinate pairs as relative coordinates unless they are preceded by an absolute value flag (=). Relative integer coordinates produce the most compact data stream. For best results, scale your drawings so you use only integer coordinates and use relative plotting mode. After PE is executed, the previous plotting mode (absolute or relative) is restored. 20-34 The Vector Group EN