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See if this article helps. http://cadtips.cadalyst.com/notestext/eliminate-excess-drawing-scales

Using the UCS and array would draw perp rectangs and as many as required. Need to find a few minutes and do code. Because the lots are different sizes there is no quick choice rather a few shortcuts.

Since you are prompting for selection of multiple objects, you will likely be using the ssget function (or ActiveX equivalent) to acquire the selection. Since the ssget function already accepts keywords to determine the selection method (e.g. Window/Fence/Polygon/Group etc.), you cannot define your own keywords (as you might using initget with one of the getXXX functions) for the user to choose during the selection prompt. One alternative approach might be to allow the user to access an options menu on pressing ENTER/SPACE/right-clicking at the prompt (as opposed to dismissing the prompt via ESC), e.g.: Select objects <options>: This can be easily implemented by evaluating the ssget function using the vl-catch-all-apply function, and testing whether the value returned is a selection set (valid selection), error object (user pressed ESC), or null (user pressed ENTER/SPACE/right-click). The only other possibility that I can think of is to roll your own ssget, in which case you can configure the function to suit any purpose and offer whatever options you like.