CAD has provided CLIP command which can be used to clip company logo, which is relatively regular in shape. But when it comes to a plant, a person or building, it would be much more inconvenient to use the CLIP command.
When we insert blocks or objects in an existing drawing, the main issue is that most of the time, the inserted blocks or objects may be too small or too big to fit the drawing. What SCALE can do now is to help us scale the object independently of others so it can fit the whole drawing.
The Align command is also a 3D command that can be performed in 3D modeling. The basics are the same to that in the 2D drawing, just need to adjust the view to a proper angle in order to see the source point and the destination point