Using External References

External references, or Xrefs, are blocks that are not permanently loaded into the current drawing file. Instead, Xrefs refer to an external drawing file for their geometry (which is how they get their name).

External references share many properties and methods with simple blocks, and for many purposes you can treat them as simple blocks. But sometimes you might also need to use external references' special capabilities. This section explains the following Xref methods:

• Attaching and detaching

• Loading and unloading

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