Editor's note: This routine was updated to v2 in April 2011. The author revised it because with the original version, the BEARING program failed in Windows 7.
Neil D. Culver's submission is a great help for the civil and survey industry. It allows you to easily draw lines by quadrant and bearing, as well as curves by radius and one other factor, such as the length or delta. Load the LISP file and then start the command by entering BLine at the Command prompt. The quadrants are 1 for NE, 2 for SE, 3 for SW, and 4 for NW. If you enter 0 for the quadrant, you are starting to draw a curve. The routine will then ask you for the radius and either the delta, chord, or length. The entire program runs in a loop until you exit, which allows you to draw all the segments of a parcel without stopping. Very handy — thanks, Neil.
Note: This LISP file (BLINE.LSP) includes two functions. The second function, named BEARING, fails when the current text style has a fixed text height of 0.0. I did not edit the file itself, and the presence of this other function does not affect the performance of the BLine function.