diff --git a/29.md b/29.md
index a116433..a2c8ef2 100644
--- a/29.md
+++ b/29.md
@@ -64,39 +64,7 @@ These are the events expected to be found in NIP-29 groups.
 
 ### Normal user-created events
 
-These events generally can be sent by all members of a group and they require the `h` tag to be present so they're attached to a specific group.
-
-- _chat message_ (`kind:9`)
-
-This is the basic unit of a _chat message_ sent to a group.
-
-```jsonc
-  "kind": 9,
-  "content": "hello my friends lovers of pizza",
-  "tags": [
-    ["h", "<group-id>"],
-    ["previous", "<event-id-first-chars>", "<event-id-first-chars>", /*...*/]
-  ]
-  // other fields...
-```
-
-- _thread root post_ (`kind:11`)
-
-This is the basic unit of a forum-like root thread post sent to a group.
-
-```jsonc
-  "kind": 11,
-  "content": "hello my friends lovers of pizza",
-  "tags": [
-    ["h", "<group-id>"],
-    ["previous", "<event-id-first-chars>", "<event-id-first-chars>", /*...*/]
-  ]
-  // other fields...
-```
-
-- _other events_:
-
-Groups may also accept other events, like [NIP-22](22.md) comments as threaded replies to both chats messages and threads, long-form articles, calendar, livestreams, market announcements and so on. These should be as defined in their respective NIPs, with the addition of the `h` tag.
+Groups may accept any event kind, including chats, threads, long-form articles, calendar, livestreams, market announcements and so on. These should be as defined in their respective NIPs, with the addition of the `h` tag.
 
 ### User-related group management events
 
diff --git a/7D.md b/7D.md
new file mode 100644
index 0000000..d8509a6
--- /dev/null
+++ b/7D.md
@@ -0,0 +1,34 @@
+NIP-7D
+======
+
+Threads
+-------
+
+`draft` `optional`
+
+A thread is a `kind 11` event.  Threads SHOULD include a `subject` with a summary
+of the thread's topic.
+
+```json
+{
+  "kind": 11,
+  "content": "Good morning",
+  "tags": [
+    ["subject", "GM"]
+  ]
+}
+```
+
+Replies to `kind 11` MUST use [NIP-22](./22.md) `kind 1111` comments. Replies should
+always be to the root `kind 11` to avoid arbitrarily nested reply hierarchies.
+
+```json
+{
+  "kind": 1111,
+  "content": "Cool beans",
+  "tags": [
+    ["K", "11"],
+    ["E", <event-id>, <relay-url>, <pubkey>]
+  ]
+}
+```
diff --git a/C7.md b/C7.md
new file mode 100644
index 0000000..0d94f18
--- /dev/null
+++ b/C7.md
@@ -0,0 +1,29 @@
+NIP-C7
+======
+
+Chats
+-----
+
+`draft` `optional`
+
+A chat message is a `kind 9` event.
+
+```json
+{
+  "kind": 9,
+  "content": "GM",
+  "tags": []
+}
+```
+
+A reply to a `kind 9` is an additional `kind 9` which quotes the parent using a `q` tag.
+
+```json
+{
+  "kind": 9,
+  "content": "nostr:nevent1...\nyes",
+  "tags": [
+    ["q", <event-id>, <relay-url>, <pubkey>]
+  ]
+}
+```