sync docs

git-svn-id: https://svn.r-project.org/R/trunk@88440 00db46b3-68df-0310-9c12-caf00c1e9a41

Author: smeyer

doc/manual/R-exts.texi

@@ -8154,20 +8154,21 @@ The following example is from @file{Poisson.Rd}:
 
 @example
 @group
-  \deqn@{p(x) = \frac@{\lambda^x e^@{-\lambda@}@}@{x!@}@}@{%
+  \deqn@{p(x) = \frac@{\lambda^x e^@{-\lambda@}@}@{x!@}@}@{
         p(x) = \lambda^x exp(-\lambda)/x!@}
-  for \eqn@{x = 0, 1, 2, \ldots@}.
+  for \eqn@{x = 0, 1, 2, \ldots@} .
 @end group
 @end example
 
 @iftex
 For the @LaTeX{} manual and in enhanced @HTML{} help, this becomes
 @c: this is TeXinfo markup, not the result of the conversions.
+@c FIXME: switch to @displaymath when we require Texinfo 6.8 or later
 @quotation
 @cartouche
 @tex
 $$ p(x) = {\lambda^x e^{-\lambda} \over x!} $$
-for $x = 0, 1, 2, \ldots$.
+for $x = 0, 1, 2, \ldots$ .
 @end tex
 @end cartouche
 @end quotation
@@ -8180,7 +8181,7 @@ In plain-text help we get
 @example
     p(x) = lambda^x exp(-lambda)/x!
 
-for x = 0, 1, 2, ....
+for x = 0, 1, 2, ... .
 @end example
 @end cartouche
 @end quotation

src/library/stats/man/Poisson.Rd

@@ -53,7 +53,9 @@ rpois(n, lambda)
 \details{
   The Poisson distribution has density
 %-- please leave the linebreaking for the next two ! --
-  \deqn{p(x) = \frac{\lambda^x e^{-\lambda}}{x!}}{p(x) = \lambda^x exp(-\lambda)/x!}
+%-- keep in sync with R-exts#Mathematics --
+  \deqn{p(x) = \frac{\lambda^x e^{-\lambda}}{x!}}{
+        p(x) = \lambda^x exp(-\lambda)/x!}
   for \eqn{x = 0, 1, 2, \ldots} .
   The mean and variance are \eqn{E(X) = Var(X) = \lambda}.