Sisyphus says: tweaked comments about not using old-style OpenGL examples (#1459, #1394 etc.)

examples/README.txt

@@ -48,7 +48,7 @@ leaving you with no option but sadness/anger (Intel GPU drivers were reported as
 opengl2_example/
     **DO NOT USE THIS CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
     **Prefer using the code in the opengl3_example/ folder**
-    GLFW + OpenGL example (legacy fixed graphic pipeline).
+    GLFW + OpenGL example (legacy, fixed pipeline).
     This code is mostly provided as a reference to learn how ImGui integration works, because it is shorter to read.
     If your code is using GL3+ context or any semi modern OpenGL calls, using this is likely to make everything more
     complicated, will require your code to reset every single OpenGL attributes to their initial state, and might
@@ -57,7 +57,7 @@ opengl2_example/
 opengl3_example/
     GLFW + OpenGL example (programmable pipeline, binding modern functions with GL3W).
     This uses more modern OpenGL calls and custom shaders. 
-    Prefer using that if you are using modern OpenGL3/4 in your application.
+    Prefer using that if you are using modern OpenGL in your application (anything with shaders, vbo, vao, etc.).
 
 directx9_example/
     DirectX9 example, Windows only.
@@ -76,15 +76,18 @@ apple_example/
     Synergy keyboard integration is rather hacky.
 
 sdl_opengl2_example/
-    *DO NOT USE THIS CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL*
-    SDL2 + OpenGL example (old fixed pipeline).
-    This is mostly provided as a reference to learn how ImGui integration works, because it is easier to read.
-    If your code is using GL3+ context or any semi modern OpenGL calls, using this is likely to make everything
-    more complicated, will require your code to reset every single OpenGL attributes to their initial state,
-    and might confuse your GPU driver. Prefer using sdl_opengl3_example.
+    **DO NOT USE THIS CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
+    **Prefer using the code in the sdl_opengl3_example/ folder**
+    SDL2 + OpenGL example (legacy, fixed pipeline).
+    This code is mostly provided as a reference to learn how ImGui integration works, because it is shorter to read.
+    If your code is using GL3+ context or any semi modern OpenGL calls, using this is likely to make everything more
+    complicated, will require your code to reset every single OpenGL attributes to their initial state, and might
+    confuse your GPU driver. 
 
 sdl_opengl3_example/
     SDL2 + OpenGL3 example.
+    This uses more modern OpenGL calls and custom shaders. 
+    Prefer using that if you are using modern OpenGL in your application (anything with shaders, vbo, vao, etc.).
 
 allegro5_example/
     Allegro 5 example.