YES

    Enables protection for all the clusters defined in subsequent
    lines in the options file by the CLUSTER= option or the COLLECT=
    option, up to a line containing another PROTECT= option.

 NO

    Disables protection for all clusters specified on subsequent
    lines of a linker options file by the CLUSTER= option or the
    COLLECT= option, up to the line containing another PROTECT=YES
    option. Protection is disabled by default.