Document the extra epoll flags
diff --git a/Doc/library/select.rst b/Doc/library/select.rst
index eb63710..5418093 100644
--- a/Doc/library/select.rst
+++ b/Doc/library/select.rst
@@ -131,15 +131,15 @@
| :const:`EPOLLONESHOT` | Set one-shot behavior. After one event is |
| | pulled out, the fd is internally disabled |
+-----------------------+-----------------------------------------------+
- | :const:`EPOLLRDNORM` | ??? |
+ | :const:`EPOLLRDNORM` | Equivalent to :const:`EPOLLIN` |
+-----------------------+-----------------------------------------------+
- | :const:`EPOLLRDBAND` | ??? |
+ | :const:`EPOLLRDBAND` | Priority data band can be read. |
+-----------------------+-----------------------------------------------+
- | :const:`EPOLLWRNORM` | ??? |
+ | :const:`EPOLLWRNORM` | Equivalent to :const:`EPOLLOUT` |
+-----------------------+-----------------------------------------------+
- | :const:`EPOLLWRBAND` | ??? |
+ | :const:`EPOLLWRBAND` | Priority data may be written. |
+-----------------------+-----------------------------------------------+
- | :const:`EPOLLMSG` | ??? |
+ | :const:`EPOLLMSG` | Ignored. |
+-----------------------+-----------------------------------------------+