Update opt-trace-format.md

pgbovine · pgbovine · commit b2d537635bbc · 2015-01-23T00:27:57.000-05:00
diff --git a/v3/docs/opt-trace-format.md b/v3/docs/opt-trace-format.md
@@ -141,6 +141,12 @@ without setting up a server.
 **If you open up your browser console, you will see the current trace entry being printed out as you step through the
 visualization, which can help you debug.**
 
+P.S. to create a trace file in the appropriate format using the defaault OPT Python frontend, run `generate_json_trace.py` using the `--create_jsvar` option:
+
+```python
+python generate_json_trace.py --create_jsvar=trace example.py > test-trace.js
+```
+
 
 ## Execution Point Objects
 
