Attaching external references
Attaching a separate drawing to the current one creates an external reference.
The external reference appears in the drawing as a block definition, but the
drawing entities are linked rather than added to the current drawing. If you
modify the linked drawing, the current drawing that contains the external reference
is updated automatically when you open it, or you can reload the external reference
manually so it reflects the latest version of the external reference.
When you attach an external reference, its layers, linetypes, text styles,
and other elements are not added to the current drawing. Rather, these elements
are also linked from the referenced file.
There are two ways you can attach an external reference:
- An attachment is an inserted drawing that contains a link to the original
file. Attachments can themselves contain other, nested reference files. When
you attach an external reference, any nested references contained in the file
also appear in the current drawing.
- An overlay is an inserted drawing that contains a link to the original
file. Overlays allow you to lay a drawing on top of another drawing, similar
to the way you work manually with transparencies. When a drawing that contains
overlaid external references is itself attached or overlaid as an external
reference in another drawing, the overlays do not appear as part of the external
reference. Use overlaying when you want to see reference geometry in a drawing
but you do not need to include that geometry in drawings that will be used
by others (nested external references).
You can attach as many copies of an external reference file as you want. Each
copy can have a different position, scale, and rotation angle.
To attach external references
- Do one of the following:
Specify the drawing file to attach as an external reference, and then click
In Reference Type, choose how you want to insert the drawing:
- Choose Insert> Xref Manager.
- On the Tools toolbar, click the Xref Manager tool ().
- Type xrm and then press Enter.
Make any additional selections.
If you marked Specify On-Screen for any items, follow the prompts to attach
the external reference.
- Attachment - inserts a copy of the drawing and includes
any other drawings that are externally referenced within the referenced
- Overlay - lays a copy of a drawing over your original drawing;
it does not include any nested external references in the externally referenced
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Binding external references
Changing the path for
Clipping external references
Opening external references
Reloading external references
Removing external references
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