* retrace OpenGL calls from a file;
-* visualize trace files, and inspect state.
+* inspect OpenGL state at any call while retracing;
+
+* visualize and edit trace files.
Basic usage
[`GL_GREMEDY_frame_terminator`](http://www.opengl.org/registry/specs/GREMEDY/frame_terminator.txt)
GL extensions.
-*apitrace* will advertise and intercept these GL extensions independently of
+**apitrace** will advertise and intercept these GL extensions independently of
the GL implementation. So all you have to do is to use these extensions when
available.
Regression testing
------------------
-These are the steps to create a regression test-suite around apitrace:
+These are the steps to create a regression test-suite around **apitrace**:
* obtain a trace