Understanding how to utilize Xref’s in Autocad is very important. Simply put Xref’s are an ‘external reference’ to your existing cad drawing. This can be an image, PDF, DGN, DWF or even another Autocad Drawing. There are a few things to keep in mind. If you modify your Xref it will be updated in your drawing. It is important to understand the insertion point of your Xref in relation to your drawing as well. Xref’s’ are a very important tool every Cad Designer should utilize and understand their uses.