diff --git a/djvu.c b/djvu.c
index 6d7c9f768..fd90af3ca 100644
--- a/djvu.c
+++ b/djvu.c
@@ -400,16 +400,9 @@ static int drawPage(lua_State *L) {
 	DjvuPage *page = (DjvuPage*) luaL_checkudata(L, 1, "djvupage");
 	DrawContext *dc = (DrawContext*) luaL_checkudata(L, 2, "drawcontext");
 	BlitBuffer *bb = (BlitBuffer*) luaL_checkudata(L, 3, "blitbuffer");
-	int render_mode = (int) luaL_checkint(L, 6);
-	ddjvu_render_mode_t djvu_render_mode;
+	ddjvu_render_mode_t djvu_render_mode = (int) luaL_checkint(L, 6);
 	unsigned char adjusted_low[16], adjusted_high[16];
 	int i, adjust_pixels = 0;
-
-	if (render_mode)
-		djvu_render_mode = DDJVU_RENDER_BLACK;
-	else
-		djvu_render_mode = DDJVU_RENDER_COLOR;
-
 	ddjvu_format_t *pixelformat;
 	ddjvu_rect_t pagerect, renderrect;
 	uint8_t *imagebuffer = NULL;
diff --git a/djvureader.lua b/djvureader.lua
index 129a4e2ba..0edb4bca3 100644
--- a/djvureader.lua
+++ b/djvureader.lua
@@ -22,22 +22,35 @@ function DJVUReader:adjustDjvuReaderCommand()
 	self.commands:del(KEY_J, MOD_SHIFT, "J")
 	self.commands:del(KEY_K, MOD_SHIFT, "K")
 	self.commands:add(KEY_R, nil, "R",
-		"toggle rendering mode: b&w/colour",
-		function(DJVUReader)
-			DJVUReader:toggle_render_mode()
-		end)
+		"select djvu page rendering mode",
+		function(self)
+			self:select_render_mode()
+	end) 
 end
 
--------------------------------------------------------
--- toggle rendering mode between colour (0) and b&w (1)
--------------------------------------------------------
-
-function DJVUReader:toggle_render_mode()
-	InfoMessage:show("New render_mode = "..self.render_mode, 1)
-	Debug("toggle_render_mode, render_mode=", self.render_mode)
-	self.render_mode = 1 - self.render_mode
-	self:clearCache()
-	self.doc:cleanCache()
+-- select the rendering mode from those supported by djvulibre.
+-- Note that if the values in the definition of ddjvu_render_mode_t in djvulibre/libdjvu/ddjvuapi.h change,
+-- then we should update our values here also. This is a bit risky, but these values never change, so it should be ok :)
+function DJVUReader:select_render_mode()
+	local mode_menu = SelectMenu:new{
+		menu_title = "Select DjVu page rendering mode",
+		item_array = {
+			"COLOUR (works for both colour and b&w pages)",		--  0  (colour page or stencil)
+			"BLACK & WHITE (for b&w pages only, much faster)",	--  1  (stencil or colour page)
+			"COLOUR ONLY (slightly faster than COLOUR)",		--  2  (colour page or fail)
+			"MASK ONLY (for b&w pages only)",					--  3  (stencil or fail)
+			"COLOUR BACKGROUND (show only background)",			--  4  (colour background layer)
+			"COLOUR FOREGROUND (show only foreground)"			--  5  (colour foreground layer)
+			},
+		current_entry = self.render_mode,
+	}
+	local mode = mode_menu:choose(0, fb.bb:getHeight()) 
+	if mode then
+		self.render_mode = mode - 1
+		Debug("select_render_mode(), render_mode=", self.render_mode)
+		self:clearCache()
+		self.doc:cleanCache()
+	end
 	self:redrawCurrentPage()
 end
 
diff --git a/filechooser.lua b/filechooser.lua
index bea01335b..baf6fea51 100644
--- a/filechooser.lua
+++ b/filechooser.lua
@@ -403,11 +403,9 @@ function FileChooser:addAllCommands()
 			local oldname = self:FullFileName()
 			if oldname then
 				local name_we = self.files[self.perpage*(self.page-1)+self.current - #self.dirs]
-				local ext = string.lower(string.match(oldname, ".+%.([^.]+)") or "")
-				name_we = string.sub(name_we,1,-2-string.len(ext))
 				local newname = InputBox:input(0, 0, "New filename:", name_we)
 				if newname then
-					newname = self.path.."/"..newname..'.'..ext
+					newname = self.path.."/"..newname
 					os.rename(oldname, newname)
 					os.rename(DocToHistory(oldname), DocToHistory(newname))
 					self:setPath(self.path)
diff --git a/unireader.lua b/unireader.lua
index 500edf75d..104d600bf 100644
--- a/unireader.lua
+++ b/unireader.lua
@@ -34,9 +34,9 @@ UniReader = {
 	-- gamma setting:
 	globalgamma = 1.0,   -- GAMMA_NO_GAMMA
 
-	-- rendering mode toggle (used in djvu.c:drawPage())
-	-- if set to 1 render in BLACK & WHITE, otherwise COLOR
-	render_mode = 1,
+	-- DjVu page rendering mode (used in djvu.c:drawPage())
+	-- See comments in djvureader.lua:DJVUReader:select_render_mode()
+	render_mode = 0, -- COLOUR
 
 	-- cached tile size
 	fullwidth = 0,
@@ -1015,6 +1015,7 @@ function UniReader:loadSettings(filename)
 
 		self.globalzoom = self.settings:readSetting("globalzoom") or 1.0
 		self.globalzoom_mode = self.settings:readSetting("globalzoom_mode") or -1
+		self.render_mode = self.settings:readSetting("render_mode") or 0
 
 		self:loadSpecialSettings()
 		return true
@@ -2000,6 +2001,7 @@ function UniReader:inputLoop()
 		self.settings:saveSetting("globalzoom", self.globalzoom)
 		self.settings:saveSetting("globalzoom_mode", self.globalzoom_mode)
 		self.settings:saveSetting("highlight", self.highlight)
+		self.settings:saveSetting("render_mode", self.render_mode)
 		self:saveSpecialSettings()
 		self.settings:close()
 	end
@@ -2260,7 +2262,7 @@ function UniReader:addAllCommands()
 			-- now, perform full screen refresh
 			self.rcount = self.rcountmax
 			self:redrawCurrentPage()
-			--[[ eink will not refresh if nothing is changeed on the screen
+			--[[ eink will not refresh if nothing is changed on the screen
 			-- so we fake a change here.
 			fb.bb:invertRect(0, 0, 1, 1)
 			fb:refresh(1)