Someone already asked a question about the different GL11, GL12 etc. Here: http://lwjgl.org/forum/index.php/topic,2237.0.html
But it didn't answer my question. In the online documention: http://www.lwjgl.org/javadoc/
I see that GL11 contains all of the familiar fields and functions of OpenGL Ver 1.1, but the later versions like GL15, GL20 for instance are missing those fields/functions.
example: static void glBegin(int mode);
This function is listed under GL11, but not under the others. Is it simply implied that the later GL versions contain these earlier fields/functions? Or are they actually not included in the newer APIs?
Note: I've only worked with OpenGL 1.1 and C++ so far, that's why I'm not sure about the doc's meaning.