I think with AIP r7 it was L and then in AIP r8 they changed it to be more
specific to piping.
-Kevin
"tsangsiuyan" wrote in message
news:18044788.1083564036344.JavaMail.jive@jiveforum2.autodesk.com...
> when i checked the iproperty of the file of pipe segment, i found that
there are two terms inside "custom", which are PL and L. Their units are
both"mm" and their value are the sane. I guess that they are pipe length.
> But, i don't know the difference between them , "L" and "PL".
> please tell me
> thx