Index: Makefile.in
===================================================================
diff -u -raca47b6a2e650115cb1b517e62c6d1c33bdc89c6 -r7cedf8c74c7f7c1db13880614ac11935045ffe06
--- Makefile.in	(.../Makefile.in)	(revision aca47b6a2e650115cb1b517e62c6d1c33bdc89c6)
+++ Makefile.in	(.../Makefile.in)	(revision 7cedf8c74c7f7c1db13880614ac11935045ffe06)
@@ -295,12 +295,12 @@
 $(target_doc_dir)/$(PACKAGE_NAME)/index.html: $(PACKAGE_NAME).nxd
 	$(TCLSH) $(src_app_dir_native)/utils/nxdoc $(NXDFLAGS) -doctitle $(PACKAGE_NAME) \
 	-docurl "http://next-scripting.org/" -docversion $(PACKAGE_VERSION) \
-	-outdir $(target_doc_dir) -indexfiles generic/nxdocIndex -- "package:$(PACKAGE_NAME)"
+	-outdir $(target_doc_dir) -indexfiles generic/nxdocIndex.tcl -- "package:$(PACKAGE_NAME)"
 
 $(target_doc_dir)/nx/index.html: library/nx/nx.nxd $(PACKAGE_NAME).nxd
 	$(TCLSH) $(src_app_dir_native)/utils/nxdoc $(NXDFLAGS) -doctitle nx \
 	-docurl "http://next-scripting.org/" -docversion $(PACKAGE_VERSION) \
-	-outdir $(target_doc_dir) -indexfiles "library/nx/nxdocIndex" -- "package:nx"
+	-outdir $(target_doc_dir) -indexfiles library/nx/nxdocIndex.tcl -- "package:nx"
 
 $(xotcl_target_doc_dir)/XOTcl-langRef/index.html: library/xotcl/doc/langRef.xotcl 
 	$(TCLSH) $(src_app_dir_native)/utils/nxdoc -doctitle XOTcl-langRef \
@@ -320,14 +320,14 @@
 $(target_doc_dir)/$(PACKAGE_NAME).xowiki : $(PACKAGE_NAME).nxd
 	$(TCLSH) $(src_app_dir_native)/utils/nxdoc $(NXDFLAGS) -doctitle $(PACKAGE_NAME) \
 	-docurl "http://next-scripting.org/" -docversion $(PACKAGE_VERSION) \
-	-outdir $(target_doc_dir) -format xowiki -layout many-to-1 -indexfiles "generic/nxdocIndex" \
+	-outdir $(target_doc_dir) -format xowiki -layout many-to-1 -indexfiles generic/nxdocIndex.tcl \
 	-- "package:$(PACKAGE_NAME)"
 
 
 $(target_doc_dir)/nx.xowiki : library/nx/nx.nxd $(PACKAGE_NAME).nxd
 	$(TCLSH) $(src_app_dir_native)/utils/nxdoc $(NXDFLAGS) -doctitle nx \
 	-docurl "http://next-scripting.org/" -docversion $(PACKAGE_VERSION) \
-	-outdir $(target_doc_dir) -format xowiki -layout many-to-1 -indexfiles "library/nx/nxdocIndex" \
+	-outdir $(target_doc_dir) -format xowiki -layout many-to-1 -indexfiles library/nx/nxdocIndex.tcl \
 	-- "package:nx"
 
 $(xotcl_target_doc_dir)/XOTcl-langRef.xowiki : library/xotcl/doc/langRef.xotcl
Index: library/lib/nxdoc-core.tcl
===================================================================
diff -u -rc4997e0189bb712287aa53d12bb3e332acfb781d -r7cedf8c74c7f7c1db13880614ac11935045ffe06
--- library/lib/nxdoc-core.tcl	(.../nxdoc-core.tcl)	(revision c4997e0189bb712287aa53d12bb3e332acfb781d)
+++ library/lib/nxdoc-core.tcl	(.../nxdoc-core.tcl)	(revision 7cedf8c74c7f7c1db13880614ac11935045ffe06)
@@ -3141,7 +3141,7 @@
       append index "set ::nxdoc::include($cmd) $documentAll\n"
     }
 
-    set fid [open [file join [file normalize $outdir] nxdocIndex] w]
+    set fid [open [file join [file normalize $outdir] nxdocIndex.tcl] w]
     puts -nonewline $fid $index
     close $fid
   }