IBM 5280 Distributed Data System - Index of

DecimalPosition75-79808182-9596-108109-110111-118119DescriptionEnd of data address (EOD); identifies the address of the nextunused sector within the data set extent, using the same format asBOE. If this field is the same as BOE, the extent contains a nulldata set. If this field contains the address of the next block beyondthe extent (for unblocked, unspanned records), the entire extenthas been used. For blocked or spanned records, this field must beused with offset to next record space (positions 58-62) to determinethe end of actual data recorded.Not used.Destination selection code (not used by the 5280).Not used.System code; identifies the operating system that created the dataset label for this data set. (For the 5280 system, this field will beIBM5280.)File application type (not used by the 5280).Not used.Data header/trailer label indicator (for I and E exchange only):BlankFEBIndicates that the data set uses no data labels.Indicates that one or more data header labels are stored inthe beginning of the data set.Indicates that one or more data trailer labels are storedat the end of the data set.Indicates that one or more data header labels are stored atthe beginning of the data set and one or more data trailerlabels are stored at the end of the data set.120-121122123124-128Number of data header labels (I and E exchange only). Can havevalues 01 through 99.Number of data trailer labels (I and E exchange only). Can havevalues 1 through 9.Record delete indicator (for I ad E exchange only); the characterused to indicate deleted records. This character appears in the lastposition of a logical record to indicate that it is deleted. Validcharacters are A-Z, 0-9, or one of the following symbols: . , - /%#@:$&Not used.Diskette Labels 359