script.ps

/pagewidth  currentpagedevice /PageSize get 0 get def
/pageheight currentpagedevice /PageSize get 1 get def
/stringHolder 10 string def
<<
   /EndPage
   {
     2 eq { pop false }
     {
        newpath
        0 0 moveto
        0 20 lineto
        200 20 lineto
        200 0 lineto
        closepath
        %%gsave
        1 setgray
        fill
        %%grestore
        1 setlinewidth
        0 setgray
        stroke

        gsave
        /Times-Roman 9 selectfont              
        30 5 moveto                            
        pagewidth
        stringHolder cvs
        show
        ( - ) show
        pageheight
        stringHolder cvs
        show

        grestore
        true
     } ifelse
   } bind
>> setpagedevice