The Edit option (2) allows you to create, display, and change data stored in ISPF libraries, other partitioned or single-volume or multivolume sequential data sets, or z/OS® UNIX files with these characteristics:

• Record Format (RECFM):
  • Fixed or variable (non-spanned)
  • Blocked or unblocked
  • With or without printer control characters
• Logical Record Length (LRECL):
  • From 1 to 32 760, inclusive, for fixed-length records
  • From 5 to 32 756, inclusive, for variable-length records.
• VSAM data
  • VSAM data can be edited if the ISPF Configuration table has been customized to enable VSAM support (that is, VSAM_EDIT_ENABLED is set to "YES").
    Note: When VSAM support is enabled, the default value for VSAM_EDIT_COMMAND is "FMNMAIN DSE /". If the command is not available, IKJ56500I COMMAND FMNMAIN NOT FOUND, is issued as a TSO message.
• z/OS UNIX files.