Start a new winodw without changing to it?

[Wu, Yue]

Sometimes I want to create a new window to run some command but without  
changing to it, a workaround is:

    screen -X eval "screen" "stuff 'cmd'\015" "other"

but it will break the sequence of screen windows, so C-a C-a no longer  
switches to the window that I want, instead, it switches to the new  
created window.

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Hi,
Wu, Yue