https://www.mycadsite.com/tutorials/level_4/grip-edits-in-autocad-4-5.html
By now you should be familiar with grips. These are the ‘blue squares' that get highlighted when you select an object outside of a command.
Grips are handles that allow you to manipulate the object without entering a command directly. Be aware that grip editing can lead to undesired results if you are not careful.
