/sys$common/syshlp/TECO.HLB
Errors, YCA
 *Conan The Librarian 

      ?YCA    Y command aborted

          An attempt has been made  to  execute  an  Y  or  _
          search command with an output file open, that would
          cause text in the text buffer to be erased  without
          outputting  it  to the output file.  The ED command
          controls this check.
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