Difference between ps and pdf

Hello,

I tried around with lout, trying ome features, while reading the docs  
about it.

I found two examples of lout-code, in which the postscript-output looks
as expected, but the pdf-output (directly coming from loud) is crapped.

That's the document:

========================================================
@SysInclude { math  }
@SysInclude { eq  }
@SysInclude { tbl }
@SysInclude { doc }
@Doc @Text @Begin

@LeftNote left
@RightNote right
@RightNote { @Eq { big int supp 1 on 0    dx over sqrt x } }

@NP

@Place
x { right - 1c - xsize }
y { { foot + top } / 2 }
{
@Box { Hello }
}

@Place
x { right - 1c - xsize }
y { { foot + top } / 2 - 1c }
{
@Box { world! }
}




@End @Text
========================================================

I'm using:
   Basser Lout Version 3.40 (June 2013)


Ciao,
    Oliver