diff --git a/Scripts/Functions/Help/Texinfo/Templates/en_US/manual-index.texinfo b/Scripts/Functions/Help/Texinfo/Templates/en_US/manual-index.texinfo
index abe002c..b197b13 100755
--- a/Scripts/Functions/Help/Texinfo/Templates/en_US/manual-index.texinfo
+++ b/Scripts/Functions/Help/Texinfo/Templates/en_US/manual-index.texinfo
@@ -1,3 +1,8 @@
 @node Index
 @unnumbered Index
+@syncodeindex fn cp
+@syncodeindex vr cp
+@syncodeindex ky cp
+@syncodeindex pg cp
+@syncodeindex tp cp
 @printindex cp
diff --git a/Scripts/Functions/Help/Texinfo/Templates/es_ES/manual-index.texinfo b/Scripts/Functions/Help/Texinfo/Templates/es_ES/manual-index.texinfo
index d168d12..b197b13 100755
--- a/Scripts/Functions/Help/Texinfo/Templates/es_ES/manual-index.texinfo
+++ b/Scripts/Functions/Help/Texinfo/Templates/es_ES/manual-index.texinfo
@@ -1,3 +1,8 @@
 @node Index
-@unnumbered Índice
+@unnumbered Index
+@syncodeindex fn cp
+@syncodeindex vr cp
+@syncodeindex ky cp
+@syncodeindex pg cp
+@syncodeindex tp cp
 @printindex cp