What part of the pdf structure applies to being able to interact with content produced from AutoCad

[d5150a]

Or other similar AEC/engineering applications?

Is it the same data layer that scale would be also set in?

I'd like to create some tools similar to what's available in "Brand BB" for estimating/ takeoff data acquisition.

does this make sense how I worded it?

Ive been scouring the web trying to find information, have read most of the SDK docs here, including the latest PDF Reference (that one, I felt like I needed to reach out to that Steve DeGrassi guy,,,,lol )

It seems like it's the OCL , optional content layer or something like that,,,

[Test Screen Name]

I don't know Brand BB, so I don't know what you mean by "interact". I can't tie "data layer" to parts of the PDF reference, though optional content is indeed often referred to as "layers". Can you outline what sort of thing you want to happen? And what part you'd want the Acrobat SDK to play in that?