Blocks, attributes, and external references provide mechanisms for managing entities in your drawings and for including additional information with the standard drawing entities. With blocks, you can combine numerous entities into a single entity, and then reuse it, inserting multiple copies. With attributes, you can associate text, such as part numbers or prices, with blocks, and then extract the text-attribute information to a separate file, such as a database, for further analysis. With external references, you can link separate reference drawing files to the current drawing to combine information without adding the contents of the reference drawings to a drawing. If you make changes to the referenced file, all references are updated automatically.
This section explains how to:
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Working with external references
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Bind an external reference to a drawing
Change the external reference path
Create a block for use within a current drawing
Edit an attribute attached to a block
Insert an entire drawing into the current drawing
Insert an external reference as a block