File_Access_Methods_in_a_Pipeline

   A pipeline segment command can only use the RMS sequential file
   access method to read and write to the pipes. Certain OpenVMS
   utilities may access their input and output files using methods
   other than sequential access. These operations are not supported
   in a pipeline, and will fail, as in the following example:

   $ PIPE CC/NOOBJ/NOLIS TEST.C | SEARCH SYS$INPUT/WIND=(1,1) "%cc-w-"

   %SEARCH-F-RFAERR, RMS error using RFA access
   -RMS-F-RAC, invalid record access mode

   In this example, the /WINDOW qualifier for the SEARCH command
   requires the relative file access method.