ACA 2012 on Win7We are having an issue with our subcontractors wanting CAD drawings from us and they are refusing pdfs. So I am trying to find a happy medium and am hoping that dwfs solve our subs issues. My question is: Will a dwf created in 2012 be useable in an older version of Autocad? like 2008? is there a file format limitation?Thanks beforehand for your help!Bridgett