/DIAGNOSTICS

  The /DIAGNOSTICS qualifier controls the creation  of  a  diagnostics  file
  containing  messages  and  diagnostic  information  for  use by the Compaq
  Language-Sensitive Editor (LSE).

  The format of the /DIAGNOSTICS qualifier is as follows:

     /[NO]DIAGNOSTICS[=file-spec]

  LSE uses the diagnostics file to display diagnostic error messages and  to
  position the cursor on the line and column where a source error exists.

  If you do not supply a file specification with the /DIAGNOSTICS qualifier,
  the  diagnostics  file  has the same name as its corresponding source file
  and a default file type of .DIA.  All other file specification  attributes
  depend on the placement of the qualifier in the command.

  The default is /NODIAGNOSTICS.