Frame buffer support in 2.1?

I see the framebuffer EXT however very little is written about this extension.
Or does OpenGL 2.1 support framebuffers?

OpenGL 2.1 supports the system framebuffer of course, but I don’t think that’s what you’re asking.

The core 2.1 spec doesn’t define framebuffer objects (FBOs) – i.e. framebuffers besides the system framebuffer. However, you can access them through extensions on most platforms. Prefer accessing them using ARB_framebuffer_object over EXT_framebuffer_object as that was the version integrated into the OpenGL 3.0 spec.

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