Relative coordinates VS. Absolute coordinates

When we use Relative Coordinates, we type the X and Y coordinates relative to the last point, it’s always about the last point.

When we use Absolute Coordinates, we type X and Y coordinates on the current coordinate system to locate the point relative to the origin. It’s always about the origin, the absolute (0,0).

Why I can’t rotate the inserted OLE image?

Inserting image like this has a problem: when we copy the drawing to others, we will have to attach the image file, otherwise, the image won’t show in the drawing that we send to others. That’s why most of the time CAD users prefer to insert an OLE image since the OLE image is saved in the drawing and there is no need to attach the image again.