diff --git a/source/algorithms.tex b/source/algorithms.tex
index de48a880ff..a2d665ae5d 100644
--- a/source/algorithms.tex
+++ b/source/algorithms.tex
@@ -22,7 +22,7 @@
 \ref{alg.c.library} & C library algorithms          & \tcode{<cstdlib>} \\ \hline
 \end{libsumtab}
 
-\synopsis{Header \tcode{<algorithm>} synopsis}
+\rSec1[algorithm.syn]{Header \tcode{<algorithm>} synopsis}
 \indextext{\idxhdr{algorithm}}%
 \indexlibrary{\idxhdr{algorithm}}%
 
@@ -1024,6 +1024,7 @@
 }
 \end{codeblock}
 
+\rSec1[algorithms.requirements]{Algorithms requirements}
 \pnum
 All of the algorithms are separated from the particular implementations of data structures and are
 parameterized by iterator types.