Dear Cho (is this your first name?),
I have helped myself by putting the following into the Layout -> Latex
preamble:
[EMAIL PROTECTED]
[EMAIL PROTECTED]
{\raggedsection \ifnum [EMAIL PROTECTED] >[EMAIL PROTECTED]
[EMAIL PROTECTED]
[EMAIL PROTECTED]
\interlinepenalty [EMAIL PROTECTED] #1\par}}
\nobreak\chapterheadendvskip
}}
I don't remember how this works but I guess it is "[EMAIL PROTECTED]" that contains
the string "Chapter" or "Appendix", depending on the context.
However, this will also change your chapters to
"Chapter 1. Your-topic, etc."
If you don't want this to happen, put the code as "red latex code" just before
the appendix (after the last chapter) instead of in the preamble.
Best reganrds,
Andreas