Selecting Entities for Modification
You must specify one or more entities for most editing commands. Selecting entities effectively helps you modify them efficiently. For example, you can specify a group of entities and apply a modification command to the entire group, called a selection set.
You can also create entity selection filters you use to create selections based on criteria like entity types and entity properties.
You cannot achieve everything with modifying commands, but you can do fundamental operations like stretching, moving, mirroring, rotating, and scaling drawing entities.
This section discusses: