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+# Development Notes
+
+## Makefile
+
+`Makefile`s are used to encapsulate the various tools in the toolchain:
+
+```bash
+make bootstrap		# install dependencies
+make test		# test using different Python versions
+make lint		# use a linter to check format
+```
+
+NOTE: To publish, see the [Release documentation](RELEASING.md).
+
+# Architecture
+
+For a general overview of Ligthstep Tracers, see [Lightstep Tracers Spec](https://github.com/lightstep/specs).
+
+This Tracer supports two transports:
+
+* **Protobuf/http** (preferred).
+* **Thrift** (least preferred).
+
+Three propagation formats are supported:
+
+* Custom Lightstep format (see the Lightstep Tracers Spec mentioned above).
+* B3.
+* Custom Binary format (_very_ least preferred), based on protobuf.