File_Specification_Differences

   With extended file names, there are two possible naming styles
   for file specifications: traditional (ODS-2 compliant) and
   extended (ODS-5 compliant). The following topics describe these
   naming styles.

   See also the OpenVMS User's Manual and the Guide to OpenVMS File
   Applications for more information about file specifications in
   Extended File Specifications.
 

Additional information available:

ODS-2_Syntax    ODS-5_Syntax    Expanded_File_Specification_Length
Case_Preservation               Using_Wildcards Case_Sensitivity_and_Blindness