diff --git a/doc/Section_start.html b/doc/Section_start.html
index b193dbda40..bae67d465f 100644
--- a/doc/Section_start.html
+++ b/doc/Section_start.html
@@ -75,7 +75,9 @@ as described in the next section.
 <LI><A HREF = "#2_2_2">Building a LAMMPS executable</A>
 <LI><A HREF = "#2_2_3">Common errors that can occur when making LAMMPS</A>
 <LI><A HREF = "#2_2_4">Editing a new low-level Makefile</A>
-<LI><A HREF = "#2_2_5">Additional build tips</A> 
+<LI><A HREF = "#2_2_5">Additional build tips</A>
+<LI><A HREF = "#2_2_6">Building for a Mac</A>
+<LI><A HREF = "#2_2_7">Building for Windows</A> 
 </UL>
 <HR>
 
@@ -339,12 +341,16 @@ Obj_name where it stores the system-specific *.o files.
 files created when LAMMPS is built, for either all builds or for a
 particular machine.
 </P>
-<P>(3) Building for a Mac.
-</P>
+<HR>
+
+<A NAME = "2_2_6"></A><B><I>Building for a Mac:</I></B> 
+
 <P>OS X is BSD Unix, so it should just work.  See the Makefile.mac file.
 </P>
-<P>(4) Building for MicroSoft Windows.
-</P>
+<HR>
+
+<A NAME = "2_2_7"></A><B><I>Building for Windows:</I></B> 
+
 <P>The LAMMPS download page has an option to download both a serial and
 parallel pre-built Windows exeutable.  See the <A HREF = "#2_5">Running LAMMPS</A>
 section for instructions for running these executables on a Windows
diff --git a/doc/Section_start.txt b/doc/Section_start.txt
index 9c8f44fa66..6cd82ae76e 100644
--- a/doc/Section_start.txt
+++ b/doc/Section_start.txt
@@ -70,7 +70,9 @@ This section has the following sub-sections:
 "Building a LAMMPS executable"_#2_2_2
 "Common errors that can occur when making LAMMPS"_#2_2_3
 "Editing a new low-level Makefile"_#2_2_4
-"Additional build tips"_#2_2_5 :ul
+"Additional build tips"_#2_2_5
+"Building for a Mac"_#2_2_6
+"Building for Windows"_#2_2_7 :ul
 
 :line
 
@@ -334,11 +336,15 @@ Typing "make clean-all" or "make clean-foo" will delete *.o object
 files created when LAMMPS is built, for either all builds or for a
 particular machine.
 
-(3) Building for a Mac.
+:line
+
+[{Building for a Mac:}] :link(2_2_6)
 
 OS X is BSD Unix, so it should just work.  See the Makefile.mac file.
 
-(4) Building for MicroSoft Windows.
+:line
+
+[{Building for Windows:}] :link(2_2_7)
 
 The LAMMPS download page has an option to download both a serial and
 parallel pre-built Windows exeutable.  See the "Running LAMMPS"_#2_5