UPDATE: I got it: The sytem menu must be enabled.
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What are the pre-requisites for this command to work?
I've tried it in my application and nothing happens.
I've created a new test application and worked fine.
I thing I've disabled something in my application that
is not allowing this command to work.

>>Hi Naomi.
>>How can I add only the Window menu to my menu?
>>But I can achieve same functionality invoking directly
>>the options of that menu?
>>

>> = sys(1500,"_MWI_CASCADE","_MWINDOW")
>>

>>
>Yes, you're right.