diff --git a/BIN-PHYLO-Tree_building.R b/BIN-PHYLO-Tree_building.R
index 7ca9099..106fac4 100644
--- a/BIN-PHYLO-Tree_building.R
+++ b/BIN-PHYLO-Tree_building.R
@@ -31,17 +31,17 @@
 
 
 #TOC> ==========================================================================
-#TOC>
+#TOC> 
 #TOC>   Section  Title                                       Line
 #TOC> -----------------------------------------------------------
-#TOC>   1        Calculating Trees                             46
-#TOC>   1.1        PROMLPATH ...                               66
-#TOC>   1.1.1          ... on the Mac                          71
-#TOC>   1.1.2          ... on Windows                          82
-#TOC>   1.1.3          ... on Linux                            96
-#TOC>   1.1.4          Confirming PROMLPATH                   101
-#TOC>   1.2        Building a maximum likelihood tree         110
-#TOC>
+#TOC>   1        Calculating Trees                             48
+#TOC>   1.1        PROMLPATH ...                               68
+#TOC>   1.1.1          ... on the Mac                          73
+#TOC>   1.1.2          ... on Windows                         101
+#TOC>   1.1.3          ... on Linux                           115
+#TOC>   1.1.4          Confirming PROMLPATH                   120
+#TOC>   1.2        Building a maximum likelihood tree         134
+#TOC> 
 #TOC> ==========================================================================
 
 
@@ -70,7 +70,7 @@ if (! requireNamespace("Rphylip", quietly = TRUE)) {
 # on your computer Phylip has been installed and define the path
 # to the proml program that calculates a maximum-likelihood tree.
 
-# ===   1.1.1  ... on the Mac
+# ===   1.1.1  ... on the Mac                    
 # On the Mac, the standard installation places a phylip folder
 # in the /Applications directory. That folder contains all the
 # individual phylip programs as <name>.app files. These are not
@@ -98,7 +98,7 @@ if (! requireNamespace("Rphylip", quietly = TRUE)) {
 #   need to repeat this process.
 #
 
-# ===   1.1.2  ... on Windows
+# ===   1.1.2  ... on Windows                    
 # On Windows you need to know where the programs have been installed, and you
 # need to specify a path that is correct for the Windows OS. Find the folder
 # that is named "exe", and right-click to inspect its properties. The path
@@ -112,12 +112,12 @@ if (! requireNamespace("Rphylip", quietly = TRUE)) {
 # I have heard that your path must not contain spaces, and it is prudent to
 # avoid other special characters as well.
 
-# ===   1.1.3  ... on Linux
+# ===   1.1.3  ... on Linux                      
 # If you are running Linux I trust you know what to do. It's probably
 # something like
 # PROMLPATH <- "/usr/local/phylip-3.695/bin"
 
-# ===   1.1.4  Confirming PROMLPATH
+# ===   1.1.4  Confirming PROMLPATH              
 # Confirm that the settings are right.
 PROMLPATH                # returns the path
 list.dirs(PROMLPATH)     # returns the directories in that path