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+GNUstep Objective-C Runtime
+
+The GNUstep Objective-C runtime is designed as a drop-in replacement for the
+GCC runtime.  It supports both a legacy and a modern ABI, allowing code
+compiled with old versions of GCC to be supported without requiring
+recompilation.  The modern ABI adds the following features:
+- Non-fragile instance variables.
+- Protocol uniquing.
+- Object planes support.
+- Declared property introspection.
+
+Both ABIs support the following feature above and beyond the GCC runtime:
+- The modern Objective-C runtime APIs, introduced with OS X 10.5.
+- Blocks (closures).
+- Low memory profile for platforms where memory usage is more important than
+  speed.
+- Synthesised property accessors.
+- Efficient support for @synchronized()
+- Type-dependent dispatch, eliminating stack corruption from mismatched
+  selectors.
+
+LICENSE: MIT