Kent Cooper used Cadalyst Tips No. 979 and No. 1114 for inspiration in creating his own version of a bisector routine for AutoCAD. This version will create a bisecting angle entity for virtually any two linear objects selected. If you select two parallel entities, then an entity is created midway between the two selected parallel entities. Start by loading the LISP routine, then type in the command BI. At this point you can select any two linear objects including, but not limited to, a line, polyline segment, leader, image, viewport, ray, xline, mline, or any of these objects nested in a block. The resulting bisecting entity created is an xline on the current layer. If you pick an unsupported entity, such as a circle, arc, spline, or text, the program will simply ask you to pick again. Great job, Kent — this is a well-written routine with plenty of comments in the code.