diff --git a/README.md b/README.md
index 6a0fd1a..6235cc1 100644
--- a/README.md
+++ b/README.md
@@ -8,8 +8,6 @@ This library is an abstraction; however in the delicate balance between
 performance and power, and API convenience, the scale is tipped closer to
 the former. Features that only exist in some sound backends are exposed.
 
-**This project is a work-in-progress.**
-
 ## Features and Limitations
 
  * Supported backends:
@@ -263,6 +261,8 @@ For each backend, do the following:
     parameters to test a USB microphone in raw mode.
  0. Run `./backend_disconnect_recover` and read the testing instructions that
     it prints.
+ 0. Run `./latency` and make sure the printed beeps line up with the beeps that
+    you hear.
 
 ### Building the Documentation
 
diff --git a/soundio/soundio.h b/soundio/soundio.h
index f3cb190..630baf9 100644
--- a/soundio/soundio.h
+++ b/soundio/soundio.h
@@ -1012,6 +1012,9 @@ SOUNDIO_EXPORT int soundio_outstream_pause(struct SoundIoOutStream *outstream, b
 /// to become audible.
 ///
 /// This function must be called only from within SoundIoOutStream::write_callback.
+///
+/// Possible errors:
+/// * #SoundIoErrorStreaming
 SOUNDIO_EXPORT int soundio_outstream_get_latency(struct SoundIoOutStream *outstream,
         double *out_latency);
 
@@ -1114,6 +1117,9 @@ SOUNDIO_EXPORT int soundio_instream_pause(struct SoundIoInStream *instream, bool
 /// represented in the buffer. This includes both software and hardware latency.
 ///
 /// This function must be called only from within SoundIoInStream::read_callback.
+///
+/// Possible errors:
+/// * #SoundIoErrorStreaming
 SOUNDIO_EXPORT int soundio_instream_get_latency(struct SoundIoInStream *instream,
         double *out_latency);