for pdf's, you would need to use the full version of Adobe to allow editting, I just don't know what to expect trying to edit a true Acad attribute in a pdf.
for dwf files, you wouldn't be able to change the text either. That format is for the supposedly "paper-less" environment that pc's were to provide and only allows for you to mark up (not actually change) what's shown in the dwf.
Define "read the contents". Printing to PDF the "contents" as I would define them don't require clicking, they are just there as text e.g. PIT-101. Are you trying to link the instrument balloon to a data sheet?
Have a look into hyperlinks. I'm not sure if they populate through printing to PDF, and I'm not sure if such links would persist in the PDF through SAP, but its the only thing I can think of outside of a fully ISO 15926 compliant software package which would manage this type of linking for you (*provided* you did everything in that software in the first place...).
Design Review does have an Object Properties palette that should at least allow us to select an object, like an attributed block I would think, and view its properties. But so far I haven't figured out myself what types of objects it's looking for or how to get AutoCAD to produce a DWF with selectable objects in it. It didn't do anything for me using a file with a set of attributed blocks.
If anyone can shed light on this I would be interested too.
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