This is a repository of usefull AutoCad and Civil3D Lisp files.
Copy each file you want to use to:
AutoCad_Insatallation_Path/Support
Then load the lisp files using this command in AutoCad/Civil3D:
AppLoad
You can add the file to the startup content section, for automaticly load the each lisp in AutoCad startup.
This lisp is used for calculate the total area of several seperate polygons. Call with this command:
polyarea
Then Select objects and hit Enter
Using this lisp, you can copy the x an y coordinates of any point to clipboard. Command:
CopyCoordinate
Then click on a point.