Default_Support

   OpenVMS utilities and commands with default support have had
   little or no modification to take advantage of Extended File
   Specifications features. These utilities and commands are
   expected to handle most of the attributes of extended file
   specifications (such as new characters and deep directory
   structures) correctly. However, issues with case sensitivity
   and case blindness (such as converting lowercase characters to
   uppercase) may occur.

   In contrast with utilities that have full support, utilities with
   default support rely on DID and FID abbreviation offered by RMS
   to handle long file specifications. As a result, these utilities
   are subject to the following restrictions related to DID and FID
   abbreviation:

   o  Matching operations in an environment where FID abbreviation
      is used may not always work as expected. For example, wildcard
      matching operations may not capture all target file names
      because the long file names may be represented in their
      numeric FID abbreviation form. This restriction specifically
      applies to matching operations that are performed outside of
      RMS.

   o  Wildcards and sticky defaults cannot be used with a FID
      abbreviation. For example, the following commands are illegal:

      $ DIRECTORY a[1,2,3]*.txt
      $ COPY a[1,2,3].txt *.txt2

      Because FID abbreviations are a unique numeric representation
      of one file, they cannot be used to represent or match any
      other file.

   o  Creating a file using a FID abbreviation is illegal.