PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2013-08-27 /* Label Generated */ NOTE = "Description of the contents of the document directory." END_OBJECT = TEXT END "document" Directory Contents The document directory contains documentation files, where available, for the data set in this volume. All document files will have an accompanying label file to describe content and structure. Label files have the same name as the main document file, with an extension of ".lbl". docinfo.txt - The file you are reading. ads.asc - This is an internal file of bibliographic information to be sent by PDS to the Abstract Data Service (ADS) to list this data set in their service. This file is not intended to be useful to data users. ads.lbl - The label for ads.asc.