--- libcoro/coro.h	2006/10/26 05:20:47	1.14
+++ libcoro/coro.h	2006/10/26 07:27:50	1.15
@@ -102,7 +102,7 @@
 /*
  * A coroutine state is saved in the following structure. Treat it as a
  * opaque type. errno and sigmask might be saved, but don't rely on it,
- * implement your own switching primitive.
+ * implement your own switching primitive if you need it.
  */
 typedef struct coro_context coro_context;