The extraction specifications of the Page Indexing Criteria define the location and length at which to extract index data from a report page. You can extract a maximum of eight locations from a page. The maximum length is 252 bytes. You can specify an index name for each location to identify uniquely the contents of the data.
An index can also be the composite of multiple locations. When you define a composite index, specify the index name for the first location and leave it blank for the remaining locations. A cross report index requires an index name.
You can extract index data from a fixed or floating location. To extract index data from a floating location, provide a search specification to locate the index data. The extraction specification refers to that search specification through a reference symbol in the form r+n, where:
For column fields, you can also specify r-n.
The entries in the table define the extraction specifications. You can scroll the table entries using the scroll commands. To modify entries in the table, type over the old values with the new values. In addition, you can use selection codes are for inserting, deleting, repeating, copying, and moving entries.
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