From: Acton, Charles H To: Date: Thu, 30 Apr 2015 15:59:37 -0400 Subject: Re: Reminder: PDS review, comet 67P coordinate system As I mentioned on the telecon a bit ago, perhaps the [A7] reference could be changed to something like this: "SPICE PCK Required Reading"; latest version; http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/FORTRAN/req/pck.html As the URL suggests, this is for a FORTRAN-focused version of the document. But the parts of the document pertinent to this subject are language independent. Chuck