Plot window - save as Postscript question

Uwe Ligges schrieb:

  
Yes: Use the postscript() device explicitly and define the width and 
height in the function call.

  

I tried it before but I think I did a mistake:
Does the width and height command not work with
If paper="letter" ?
The plot was cutted at the upper boarder of the "paper"

I tried it with paper="special" and it worked now
Best regards Knut