diff --git a/Doc/lib/libpopen2.tex b/Doc/lib/libpopen2.tex
index 577f6f1..e35d37f 100644
--- a/Doc/lib/libpopen2.tex
+++ b/Doc/lib/libpopen2.tex
@@ -106,9 +106,10 @@
 \end{memberdesc}
 
 \begin{memberdesc}{childerr}
-Where the standard error from the child process goes is
-\var{capturestderr} was true for the constructor, or \code{None}.
-This will always be \code{None} for \class{Popen4} instances.
+A file object that provides error output from the child process, if
+\var{capturestderr} was true for the constructor, otherwise
+\code{None}.  This will always be \code{None} for \class{Popen4}
+instances.
 \end{memberdesc}
 
 \begin{memberdesc}{pid}