private.xml

    <item>
        <name>Option_L to Command_L</name>
        <appendix>(+ When you type Option_L only, send EISUU)</appendix>
        <identifier>private.optl2cmdl_eisuu</identifier>
        <autogen>__KeyOverlaidModifier__ KeyCode::OPTION_L, KeyCode::COMMAND_L, KeyCode::JIS_EISUU</autogen>
    </item>
    <item>
        <name>Option_R to Command_R</name>
        <appendix>(+ When you type Option_L only, send KANA)</appendix>
        <identifier>private.optr2cmdr_kana</identifier>
        <autogen>__KeyOverlaidModifier__ KeyCode::OPTION_R, KeyCode::COMMAND_R, KeyCode::JIS_KANA</autogen>
    </item>