Find these opcodes
-----------------------

ole-excel: WARNING: invokeHandler: unsupported opcode: 0xef operands: 6
 - always appears after SELECTION
ole-excel: WARNING: invokeHandler: unsupported opcode: 0xc0 operands: 0
 - always appears after INTERFACEEND
ole-excel: WARNING: invokeHandler: unsupported opcode: 0xbf operands: 0

