going on a string localization rampage in the default theme. aside from graphics, this should be the last of the non-themeable text that actually matters (unless someone really has to change 'P1'/'P2' on the DifficultyList cursors...)

Themes/default/Graphics/Player judgment/default.lua

@@ -76,7 +76,7 @@ t[#t+1] = Def.ActorFrame {
 	};
 	LoadFont("Common Normal") .. {
 		Name="TextDisplay";
-		Text="MS";
+		Text=THEME:GetString("Protiming","MS");
 		InitCommand=cmd(visible,false);
 		OnCommand=THEME:GetMetric("Protiming","TextOnCommand");
 		ResetCommand=cmd(finishtweening;stopeffect;visible,false);

Themes/default/Graphics/ScreenMapControllers exit.lua

@@ -1,5 +1,5 @@
 return LoadFont("Common Normal") .. {
-	Text="Exit";
+	Text=ScreenString("Exit");
 	InitCommand=cmd(x,SCREEN_CENTER_X;zoom,0.75;shadowlength,0;diffuse,color("#880000");NoStroke);
 	OnCommand=cmd(diffusealpha,0;decelerate,0.5;diffusealpha,1);
 	OffCommand=cmd(stoptweening;accelerate,0.3;diffusealpha,0;queuecommand,"Hide");

Themes/default/Graphics/ScreenOptions disqualify.lua

@@ -1,3 +1,3 @@
 return LoadFont("Common Normal") .. {
-	Text="Score will be disqualified!";
+	Text=ScreenString("Disqualified");
 };