How did we get along without these?

REVERSE: This command reverses the direction of lines, polylines, splines, and helixes. As an example, say a linetype containing text flips the text when reversed, or when using these objects to create solid models, you may be able to use REVERSE instead of erasing and redrawing them….

AUTOCONSTRAIN: This command allows you to put geometric constraints to all or selected objects automatically. There is a related Constraint Setting dialog box that specifies the tolerance distance, what constraints to apply, and the order of priority. The objects to be constrained must be within the tolerances specified.

How about a hidden “undocumented” tool? When using the MOVE, ROTATE, and SCALE command, hold your CTRL key down and you can edit one segment of a polyline. This is similar to the sub-object selection available in Civil 3D.

-EXPORT: Yet another hidden and undocumented command. This will allow you to export dwf, dwfx, or pdf from one place. Make sure you have Dynamic Input turned on for easy selection.

We are just beginning to scratch the surface here. Come back later for more!

Thanks All

Bob

Source: The AutoCAD Gazette – Some New Commands in AutoCAD 2010.
Go to Source: The AutoCAD Gazette