PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 80 OBJECT = TEXT PUBLICATION_DATE = 2014-07-29 NOTE = "Description of contents of DOCUMENT directory " END_OBJECT = TEXT END The DOCUMENT directory contains documentation on the archival data set and files within the data set. DOCINFO.TXT, this file, is a summary of the contents of the DOCUMENT directory. It is an ASCII file with an attached PDS label. The file has fixed length records with 80 characters per record. Each record ends with an ASCII carriage-return line-feed pair in positions 79 and 80. ARCH_SIS.TXT is an ASCII file describing structure and contents of the archival volume. It has an attached PDS label and fixed-length records with 80 characters per record. Each record ends with an ASCII carriage-return line-feed pair in positions 79-80. ATDF_TUT.TXT is an ASCII file which provides examples of how to read binary records in an ATDF. A hexadecimal dump of the first few records of 0022078A.TDF is given, then the 'decoding' of the binary data into useful numbers and characters is given for the first three records. This an ASCII file with 120 characters per record, including an ASCII carriage-return line-feed pair in positions 119 and 120. It has an attached PDS label. HANDBOOK.PDF is the Venus Gravity Handbook, which discusses the models used in processing the Doppler data and the estimation method for determining the gravity field. HANDBOOK.LBL is its PDS label. No plain ASCII version of this document was available for the archive. SFFDR.LBL is the detached label for three versions of the Magellan Small Forces File Software Interface Specification. SFFDR.ASC is the ASCII version (80 character records with an ASCII carriage-return line-feed pair in positions 79 and 80). SFFDR.PDF is in the Adobe Portable Document Format. SFFDR.DOC is in the Microsoft Word format. SFFDR.PDF was recovered by JPL Archives; the Word file was derived from the PDF, and the ASCII version was derived from the Word file. At least two changes to the document were approved, but neither is reflected in the document itself - see InterOffice Memorandum and Magellan Changes Requests (MCRs) interleaved with the pages of the document). TRK_2_18.TXT is an ASCII file describing structure and contents of the Orbit Data File (ODF). It has an attached PDS label and fixed-length records with 80 characters per record. Each record ends with an ASCII carriage-return line-feed pair in positions 79 and 80. TRK_2_23.TXT is an ASCII file describing structure and contents of the Media Calibration Data Files (ION and TRO). It has an attached PDS label and fixed-length records with 80 characters per record. Each record ends with a carriage-return line-feed pair in positions 79 and 80. TRK_2_24.TXT is an ASCII file describing structure and contents of the DSN Weather Data Files (WEA). It has an attached PDS label and fixed-length records with 80 characters per record. Each record ends with a carriage-return line-feed pair in positions 79 and 80. TRK_2_25.TXT is an ASCII file describing structure and contents of Archival Tracking Data Files (ATDFs). It has an attached PDS label and fixed-length records with 80 characters per record. Each record ends with an ASCII carriage-return line-feed pair in positions 79-80.