Quite often in the credits department of a readme in a downloaded scenery, a scnenery builder will give credit to various people for the macros that he has used. Is there a good place to go look for such macros? Where?

Do a search for scenery macro, or API macro here on AVSIM or on Flightsim or Simviation and you should get loads

Aha, yes indeed on FlightSim there are FS2002 Scenery Design Macros. Duh. Thank you for that obvious answer.