Documentation work

docs/quick.dox

@@ -157,9 +157,10 @@ The context will remain current until you make another context current or until
 the window owning the current context is destroyed.
 
 If you are using an [extension loader library](@ref context_glext_auto) to
-access modern OpenGL then this is when to initialize it.  The loader needs the
-context to be current before it can load from it.  The following example uses
-[glad](https://github.com/Dav1dde/glad), but the same rule applies to all. 
+access modern OpenGL then this is when to initialize it, as the loader needs
+a current context to load from.  This example uses
+[glad](https://github.com/Dav1dde/glad), but the same rule applies to all such
+libraries. 
 
 @code
 gladLoadGLLoader((GLADloadproc) glfwGetProcAddress);