AutoCAD Map 3D 2009 AutoLISP Reference Download the archived PDF Table of contents Welcome Introduction What's new? Data Extension Functions Function Catalog Function Synopsis Plotting Functions Function Catalog Function Synopsis Topology Functions Function Catalog Function Synopsis Configuration Variables Topology Variables Cleanup Variables Cleanup Action Variables Error Codes Error Codes Error Types Using the API Converting Coordinates Plotting a Map Completing a Topology Drawing Cleanup Building a Topology Opening a Topology Editing Query Files Colors Sample Code Property Alteration Example More Samples next page