Hi everyone. I discovered something very interesting last night in 2010. I'm sure everyone has experienced this when you maually type in a description for a null structure (wye and bends) if you make any changes to the connected pipes inverts the description resets to displaying "null structure" Well I found a way to get around that. You basically name your null structure thru the quick properties. If you want to find out more check out my post at in my blog website.
Tony
www.tonyscivil3dworld.blogspot.com