Routing components - design table

Is there some tutorial or documentation where it describes headers in table for design table. What are all possible headers for piping and what are they needed.

For example I see some have \$prp@Weightperfoot, NominalDiameter@FilterSketch, InnerDiameter@PipeSketch ...

What kind of role do this play in routing. How is the mass calculated etc.

How to calculate mass for SI units etc...

SolidworksRouting