some problems reported in 00check.log

Thank you very much Uwe. It works now.

I have a question about pdf formating in pdf manual file:

How to format the long lines which go to the margin? For ex, this 
happens in Usage field if a function has many arguments. Also, it 
happens in examples or Arugment sections when the lines are long.

Correct the sources by re-formatting over-long lines yourself.  (This 
should only happen in verbatim-like sections, hence unlikely to happen 
in \argument{}.)

One of the things we suggest when checking a package is to read 
through the PDF manual, and this is one of the problems to look out 
for.  (Note that it does depend on the fonts used for the PDF, but the 
default Courier for monospaced text is somewhat wide.)

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595