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In article <rjl.712218343@fawlty6.eng.monash.edu.au> rjl@fawlty6.eng.monash.edu.au (Russell Lang) writes:

>I am trying to redefine \@oddpage and \@evenpage in LaTeX.
[..]
>Could someone please tell my why?

Because the AT sign char ("@") is not a normal letter char in LaTeX after
the \documentstyle command (i.e. after reading the *.sty files). It has
another \catcode, and the meaning "\spacefactor", i.e. leaving an 
end(sentence)- space after ".", "!",...

>How do I make the others work?

\makeatletter % MAKE AT (the "@" char) a normal LETTER

>\def\defone{first definition}
>\def\@oddhead{right head text}
>\def\@evenhead{left head text}
>\def\@anotherhead{another head text}
>\def\deftwo{seconf definition}

>\@oddhead

>\@evenhead

>\@anotherhead

\makeatother % MAKE AT ("@") OTHER (i.e. a special char)

>\defone

>\deftwo

>\bye

If you use that in some text, i.e.#

  \documentstyle[OPTIONS]{MAINSTYLE}
  ..
  \makeatletter
  \def\my@@c@mm@nd{BlahBlah}
  \makeatother
  ..
  \begin{document}
  .. MANY TEXT
  \makeatletter 
  \my@@c@mm@nd
  \makeatother  
Don't forget the "\makeatother" after each use of char "@", before continuing
in your normal text.
  .. MANY FURTHER TEXT
  \end{document}

Hope this helps.
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 Hartmut Frommert, LS Dehnen, Physics, | E-Mail: <phfrom@dknkurz1.bitnet>
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