Hello,
I think it's too much too start somebody to tell here everything about XREF
s but in a few words I will try to explaine.
You can use x-ref's when you have deferent fases of the project and let's say at the last one you want allmost everything from a previous fase and something to change.In xref you can turn off some layers and to draw somethign else. in the new drawing (like diferent versions).
Or you can use xref's for the stamp of the project (company name, the engineers that worked in the project , etc) and if you put the file that is used on a server everyone can used from that location.
You must find the way of working with the xrefs.
Ideea is to have under your grawing something to help you. From xrefs you can copy in your drawing lines and circles in the same position, etc.
Good luck

Hello,
it's my pleasure to help you .... if you still have something to clarify don't ezitate to ask here ... somebody will give some explainances ... good luck

Offcourse ....

P.S. I add-ed already in my yahoo messenger


Edited by Apeiron - 02.Jul.2009 at 08:24

thanks  Apeiron and Chupalok

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take care

bye