Working with File Manager
- File Manager overview
- Getting started with File Manager
- Viewing and changing data sets
  To view data stored in a supported data set, use the View Utility or the Edit Utility.
- Creating and editing templates
  For many tasks performed with File Manager, you can manipulate your view of a data set by applying a template.
- Working with the Template List
  Display a list of templates and perform actions on them.
- Filtering records with templates
- Managing data sets
- Using File Manager utilities
- Tape Specific Functions
- Disk/VSAM Data Functions
- OAM Functions
- Using UNIX™ System Services and the Hierarchical File System
- Introduction to programming with File Manager functions
- Enhancing File Manager processing
  You can enhance normal processing of a number of File Manager tasks by supplying a procedure that runs in conjunction with the File Manager process.
- Redefines criteria
  Redefines criteria can be specified for a field with a REDEFINES clause, or a field that is the target of a REDEFINES clause.
- Enhanced ISPF: Reference List, Search, Change, and PDSE Workbench
  File Manager provides several enhancements to the basic facilities that are available in an ISPF session: Enhanced Reference List, Enhanced Search, Enhanced Change, and PDSE Workbench.
- File Manager Service Provider for z/OS® Connect Enterprise Edition
  File Manager Service Provider for IBM® z/OS® Connect Enterprise Edition enables client applications to access IBM Z data sources using z/OS Connect.
- Function and panel reference lists

Logical record length

HFS files are byte-oriented, not record-oriented like z/OS® data sets. An HFS file is either defined as a text file, where record boundaries are determined by a delimiter (such as NL, LF, CR, and so on), a binary file (no specific boundaries), or neither a text or binary file. When accessing the file as a simulated QSAM data set, File Manager must identify logical records. The choice is left to you, rather than based on the file type. File Manager assumes text mode (delimited records), unless you request binary mode. In text mode, records are variable-length with the data residing between delimiters. In binary mode, delimiters are not distinguished; the records are user-defined and of fixed length (80 is the default).

File Manager assumes a maximum block size of 32760 bytes. The maximum record length is 32752 for variable-length records, and 32760 for fixed-length records. If the record length is greater than the limit, you must use binary mode.