cal 
  print out of the printer, that is the printable area.</p>
<p>For a page width of 80 columns at 10cpi the page width is calculated:</p>
<p><strong>Page Width=80 characters</strong> with/ 10 characters per inches = 
  <strong>8 inchess</strong> = 8*2.54 cms = <strong>20.32 cms</strong></p>
<p>For a page height of 66 lines:</p>
<p><strong>Page Height=66 lines</strong> / 6 lines per inches = <strong>11 inchess</strong> 
  = 11*2.54 cms = <strong>27.94 cms</strong> </p>
<p>Select user defined paper size a