There are a number of commands which permit the selection of a group of objects so that they can be transformed in some way. The following five commands work in this way. Move After selecting the objects to be moved, a displacement can be specified by picking two points which between them define a vector indicating the direction and length of the move. Copy This is similar to the MOVE command in operation, except that the original group of objects are not effected in any way. Rotate Used to rotate the selected group of objects about a specified base point through a given angle.
Positive angles yield anti-clockwise rotation, while negative angles are taken as clockwise.
This can be useful, as it allows AutoCAD to calculate the angle of rotation instead of the user. Scale The selected group of objects can be enlarged or shrunk by setting a base point for the scaling and applying an appropriate factor. In this case, a reference length is set from the drawing and the required new length is specified. This is useful when scaling something to the same length as an existing entity on the drawing. Mirror With this command a mirror copy of a selected group of objects is produced by specifying the two ends of the mirror line.