bdfp1m0mProgramming Concepts and Reference

Specifying Logical Records (LRECs) Using Keys

Once you identify the subfile you are going to work with, you may want to identify an LREC or group of LRECs in the subfile. You can do this by using keys or by specifying LREC sequence numbers, or both. This chapter discusses various aspects of using key parameters; see the individual macro and function descriptions for details about the specific key parameters and LREC sequence number parameters.