diff --git a/9unit.h b/9unit.h
index 3cfda13..a8f4056 100644
--- a/9unit.h
+++ b/9unit.h
@@ -21,15 +21,14 @@
 
 // Types & Structs
 
-// Tracks information about the tests being run.
-typedef struct TestState TestState;
-
-// Defines a log entry in a TestState struct
-typedef struct TestLogEntry TestLogEntry;
-
 // The following structures will typically be maintained by the
 // testing framework.  You shouldn't need to concern yourself with
 // them.
+
+typedef struct TestState TestState;
+typedef struct TestLogEntry TestLogEntry;
+
+// Tracks information about the tests being run.
 struct TestState
 {
 	int run; // number of tests run
@@ -45,6 +44,7 @@ struct TestState
 	void (*report)(const char *); // prints a string immediately
 };
 
+// Defines a log entry in a TestState struct
 struct TestLogEntry
 {
 	char *text; // the entry text
@@ -74,11 +74,9 @@ extern void run_test_with(
 	void * // the value to pass in
 );
 
-// Runs multiple tests, displaying a summary at the end
-extern void run_tests(
-	// runs the tests and updates a provided TestState
-	void (*)(TestState *)
-);
+// Creates an initial TestState, passes it to the supplied function,
+// and displays the resulting log and summary
+extern void run_tests(void (*)(TestState *));
 
 // Adds an entry to the log that is displayed after the tests have
 // completed