There are many commands to make the editing of the objects simpler.
Editing / Modify Toolbar:
The Modify toolbar is as shown below.
Move: To move any
entity this tool is used. How To?
Rotate:To rotate the
entity at desired angle this tool is used. How To?
Mirror about X: Mirror the selected entities about the X - axis or Flips it horizontally, this
option is used. How To?
Mirror about Y:To mirror the selected
entities about the Y - axis or Flips it vertically, this option is used. How To?
Scale: To change the size (increase/decrease) of an entity this option is used. How To?
Break : This is used to break the any type of entity. How
To?
Trim: This option is used to cut the any entity with reference to another entity. How To?
Chamfer: To join the end of two no parallel lines with another one line this option is used.
How To?
Fillet: This tool is used to join the ends of two entities with an arc of
specified radius. How To?
Auto Corner: This option is used to automatically join end point of different entities.
How To?
Properties: To see the properties of an entities this tool is
used. How To?