I guess some people used the (mostly worthless) code in WidescreenHelpers

Themes/_fallback/Scripts/02 Utilities.lua

@@ -334,6 +334,45 @@ function WideScale(AR4_3, AR16_9)
 	return scale( SCREEN_WIDTH, 640, 854, AR4_3, AR16_9 )
 end
 
+-- it turns out some people actually used this (mostly) worthless code:
+AspectRatios = {
+	ThreeFour   = 0.75,		-- (576x760 at 1024x768)
+	OneOne      = 1.0,		-- 480x480  (uses Y)
+	FiveFour    = 1.25,		-- 600x480 (1280x1024 is a real use)
+	FourThree   = 1.33333,	--* 640x480
+	SixteenTen  = 1.6,		--* 720x480
+	SixteenNine = 1.77778,	--* 853x480
+	EightThree  = 2.66666,	-- 1280x480
+};
+
+local function round(num, idp)
+	if idp and idp > 0 then
+		local mult = 10 ^ idp;
+		return math.floor(num * mult + 0.5) / mult;
+	end;
+	return math.floor(num + 0.5);
+end
+
+DisplayType = {
+	'DisplayType_Normal',
+	'DisplayType_WideScreen_16_9',
+	'DisplayType_WideScreen_16_10',
+	'DisplayType_WideScreen_8_3',
+	'DisplayType_Invalid',
+};
+
+function IsUsingWideScreen()
+	local curAspect = round(GetScreenAspectRatio(),5);
+	for k,v in pairs(AspectRatios) do
+		if AspectRatios[k] == curAspect then
+			if k == "SixteenNine" or k == "SixteenTen" then
+				return true;
+			else return false;
+			end;
+		end;
+	end;
+end;
+
 -- (c) 2005-2011 Glenn Maynard, Chris Danford, SSC
 -- All rights reserved.
 --