CVOFF
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  Purpose : Locally disable the processing of CodeView information.

  Syntax  : CVOFF

  Default : Disabled

  The CVOFF command ends a CodeView area, and disables the processing of
  CodeView information from the point the command is encountered in the
  script until the next CVON command. CodeView areas  are used to limit
  the amount of overlaid code for which CodeView debugging is enabled.

  Large overlaid applications will execute faster under the debugger if
  the amount of overlaid code containing debugging information is limited
  using CodeView areas.