Quick-Copy: to create a copy of an object without using the Copy (CTRL+C) and Paste (CTRL+V) commands, press CTRL on your keyboard and then click-and-drag the object in question. A couple of things to note when using Quick-Copy: The Missing Coordinate is not taken into consideration (unlike when using the more conventional Copy and Paste commands). Therefore, if you are using CTRL to copy an object that’s one meter off the floor, the copied object will also be one meter off the floor, regardless of the Missing Coordinate. (By comparison, copying and pasting the same object with the Copy and Paste commands, will take into account the current Missing Coordinate--so the copied object will appear at the currently-set Missing Coordinate). You can copy multiple objects with this method: simply select them before you CTRL+click-and-drag. Quick-Rotate: to Rotate an object without having to activate the Rotate (CTRL+R) command first, press and hold ALT on your keyboard, then click-and-drag any object to rotate it around its insertion point (which becomes the basepoint for the rotation). You can rotate multiple objects this way by selecting them before you ALT+click-and-drag. The rotation basepoint in this case will be the insertion point of the object nearest to the cursor when you click.
