--- /dev/null
+organization of this directory is moving towards this approach:
+
+<module>.h -- public API and data types
+<module>_private.h -- protected API and data types
+<module>.c -- implementation and private API / types
+
+The rules are:
+.c files may include *_private.h.
+.h files may not include *_private.h
+
+This allows us to have a nicely encapsulated C api with opaque data types and private functions
+that are nonetheless shared between source files without redundant extern declarations..
+
+
+
+
+