1 files changed, 6 insertions, 4 deletions

diff --git a/24.md b/24.md
index b21f48e..df3a932 100644
--- a/24.md
+++ b/24.md
@@ -6,7 +6,7 @@ Extra metadata fields and tags
 
 `draft` `optional`
 
-This NIP defines extra optional fields added to events.
+This NIP keeps track of extra optional fields that can added to events which are not defined anywhere else but have become _de facto_ standards and other minor implementation possibilities that do not deserve their own NIP and do not have a place in other NIPs.
 
 kind 0
 ======
@@ -28,7 +28,7 @@ These are fields that should be ignored or removed when found in the wild:
 kind 3
 ======
 
-These are extra fields not specified in NIP-02 that may be present in the stringified JSON of contacts events:
+These are extra fields not specified in NIP-02 that may be present in the stringified JSON of follow events:
 
 ### Deprecated fields
 
@@ -39,5 +39,7 @@ tags
 
 These tags may be present in multiple event kinds. Whenever a different meaning is not specified by some more specific NIP, they have the following meanings:
 
-  - `r`: a web URL the event is referring to in some way
-  - `title`: name of [NIP-51](51.md) sets, [NIP-52](52.md) calendar event, [NIP-53](53.md) live event or [NIP-99](99.md) listing
+  - `r`: a web URL the event is referring to in some way.
+  - `i`: an external id the event is referring to in some way - see [NIP-73](73.md).
+  - `title`: name of [NIP-51](51.md) sets, [NIP-52](52.md) calendar event, [NIP-53](53.md) live event or [NIP-99](99.md) listing.
+  - `t`: a hashtag. The value MUST be a lowercase string.