[joe rocket]

Alright well thanks guys for your input. It turns out so far that these symbols are supposed to be CV conservation vents. They still have a problem with their numbering system though. I guess what was confusing me the most was that they don’t follow a standard so it makes it really hard to compare with other drawings. Right now I’m making them pick one way of doing things and then i’ll change everything to match. ARUGH! it suprises me the multi million dollar companies can run so unorganized. Once again thaks for your input.