Example for a simple horizontal line: 0, 0, 0, 0, 10, 10, -2 (Draws a 10-unit line, lifts pen for 2 units, repeats every 10 units vertically).
Use the LIST command or ID point tool to get the X,Y coordinates of the start and end of every line segment within your cell. dxf to pat
Open Notepad (Windows) or TextEdit (Mac). The syntax is: *PatternName, Description Angle, X-origin, Y-origin, Delta-X, Delta-Y, Dash-1, Dash-2... Example for a simple horizontal line: 0, 0,