On Thu, 25 Mar 2004 12:58:31 +0100, Rainer Schöpf
<[log in to unmask]> wrote:

> On Thu, 25 Mar 2004, Ulrich Dirr wrote:
>
>  > Maybe someone could explain this behavior to me?
>
> Simple rounding errors. Internally everything is computed in scaled
> points
> = 1/65536pt. So, your \baselineskip is
>
>   13*7227*65536 / 7200 = 855162
>
> The textheight is then
>
>   39*855162 + 10*65536 = 34006678
>
> In points this is
>
>   34006678/65536 = 518.90073

Let me just ad that defining the textheight as 39\baselineskip+\topskip
instead of 39*13bp+\topskip will give you the result you want.
--
Morten Høgholm