18.3 Extra Steps

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Familiarize yourself with the following chart to help you know when to use Groups and when to use Blocks.

Ability	Blocks	Groups
Can be shared between drawings	Yes	No
You can work on objects within the block/group	Yes	Yes
Can be treated as a single object	Yes	Yes
Can carry information (data)	Yes	No
Retrievable after erasure (without the Undo command)	Yes	No
May contain (other) blocks	Yes	Yes
May contain (other) groups	No	Yes

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