Showing trimming cross lines

[Waluyo Adi Siswanto]

Dear LyX Users

I am just wondering about showing a trimming cross lines at the corner
of the paper to show the cutting off. 
For example the paper size is A4, but the book manuscript is prepared in
Koma-script, DIV8. If the title page, the trimming cross lines are shown
below than it gives the exact cutting off the paper.
Is that possible in LyX...

  
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         Title page




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Thank you in advance
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