minor markup nits
diff --git a/Doc/ref/ref3.tex b/Doc/ref/ref3.tex
index 296f79f..d0c8ccf 100644
--- a/Doc/ref/ref3.tex
+++ b/Doc/ref/ref3.tex
@@ -1983,9 +1983,9 @@
\end{methoddesc}
\begin{methoddesc}[numeric object]{__index__}{self}
-Called to implement operator.index(). Also called whenever Python
-needs an integer object (such as in slicing). Must return an integer
-(int or long).
+Called to implement \function{operator.index()}. Also called whenever
+Python needs an integer object (such as in slicing). Must return an
+integer (int or long).
\versionadded{2.5}
\end{methoddesc}
diff --git a/Doc/ref/ref5.tex b/Doc/ref/ref5.tex
index eca2f11..e64299a 100644
--- a/Doc/ref/ref5.tex
+++ b/Doc/ref/ref5.tex
@@ -391,7 +391,8 @@
A slicing selects a range of items in a sequence object (e.g., a
string, tuple or list). Slicings may be used as expressions or as
-targets in assignment or del statements. The syntax for a slicing:
+targets in assignment or \keyword{del} statements. The syntax for a
+slicing:
\obindex{sequence}
\obindex{string}
\obindex{tuple}