diff --git a/README.md b/README.md
index cbd4a97e..94539728 100644
--- a/README.md
+++ b/README.md
@@ -36,11 +36,12 @@ Build instructions are in the README file for each platform:
 
 -  [DOS](dos/README.md)
 -  [OS/2](os2/README.md)
--  [SDL](sdl1/README.md)
--  [SDL2](sdl2/README.md)
+-  [SDL 1.x](sdl1/README.md)
+-  [SDL 2.x](sdl2/README.md)
 -  [Windows](win32/README.md)
 -  [X11](x11/README.md)
 
+
 Distribution Status
 -------------------
 
diff --git a/doc/intro.md b/doc/intro.md
index f7582e0a..bbcd3fa0 100644
--- a/doc/intro.md
+++ b/doc/intro.md
@@ -350,7 +350,7 @@ particular terminal:
 The virtual keypad is arranged like this:
 
     A1     up     A3
-    left          B2   right
+    left   B2  right
     C1    down    C3
 
 This list is incomplete -- see curses.h for the full list, and use the
diff --git a/sdl1/README.md b/sdl1/README.md
index 95d22491..eac1cc78 100644
--- a/sdl1/README.md
+++ b/sdl1/README.md
@@ -1,7 +1,7 @@
-PDCurses for SDL
-================
+PDCurses for SDL 1.x
+====================
 
-This is a port of PDCurses for SDL.
+This is a port of PDCurses for version 1.x of SDL.
 
 
 Building
diff --git a/sdl2/README.md b/sdl2/README.md
index db67b743..be8aae72 100644
--- a/sdl2/README.md
+++ b/sdl2/README.md
@@ -1,7 +1,7 @@
-PDCurses for SDL2
-=================
+PDCurses for SDL 2.x
+====================
 
-This is a port of PDCurses for SDL2.
+This is a port of PDCurses for version 2.x of SDL (aka SDL2).
 
 
 Building