Using PDF Files as Underlays
You can attach one or more pages of PDF (Portable Document Format) documents to drawings as underlays.
When you attach a PDF file as an underlay, the software links the file as a reference to the current drawing.
If an attached PDF is organized in layers, you can control the visibility of the layers.
You can clip a PDF underlay to display only part of a PDF document.
The names of PDF underlays are listed in the References palette which lets you manage them.
This chapter discusses: