Reducing debugging information using CodeView areas
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 CodeView areas

 When the CODEVIEW command is encountered in the link script, Blinker will
 assume that you wish to debug all modules in the program. In order to limit
 the number of modules for which this debugging information is processed and
 stored in the .EXE file, you may wish to create CodeView areas that contain
 only the program modules you wish to debug. This is accomplished through the
 use of the CVON and CVOFF commands, which specify areas to be debugged.

 For example:

    CODEVIEW                   # Enable CodeView
    FILE start                 # Can be debugged
    BEGINAREA
       SECTION INTO START      # External overlay required for
                               # CodeView support
       CVON
          FILE one             # Can be debugged
          FILE two             # Can be debugged
          FILE three           # Can be debugged
       CVOFF
       FILE four               # Cannot be debugged
       FILE five               # Cannot be debugged
       FILE six                # Cannot be debugged
       FILE seven              # Cannot be debugged
       FILE eight              # Cannot be debugged
       CVON
          FILE nine            # Can be debugged
       CVOFF
       LIB inhouse             # Cannot be debugged
    ENDAREA