[Rd] Maths in R documentation (PR#523)

[plummer@iarc.fr]

The document R-exts contains the following example of using 
mathematics in R documentation.

\deqn{p(x) = {\lambda^x\ \frac{e^{-\lambda}}{x!}}
     {p(x) = lambda^x exp(-lambda)/x!}

There is a syntax error in there, but that's not my point.
The problem is that using "R CMD Rd2dvi" I find that putting
the alternate forms of the equation on top of each other doesn't
work.

\deqn{foo}
     {bar}

is interpreted as

\deqn{foo}
bar

which causes a number of problems,e.g. you get both forms of the
equation printed, LaTeX complains about missing math delimiters, etc.
I solved this by putting everything on one line:

\deqn{foo}{bar}

but there is either a documentation error in there, or a problem with
parsing ".Rd" format files.

Another problem is that when I type "R CMD Rd2dvi coda" to get a printable
reference for all the functions in the coda package, they seem to come out in
a more or less random order. I get
read.bugs, mcmc, plot.mcmc, codamenu, read.and.check,...
I was expecting alphabetical order. What do I have to do to get this?

Martyn

--please do not edit the information below--

Version:
 platform = i686-unknown-linux
 arch = i686
 os = linux
 system = i686, linux
 status =
 major = 1
 minor = 0.1
 year = 2000
 month = April
 day = 14
 language = R

Search Path:
 .GlobalEnv, Autoloads, package:base

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