1 files changed, 6 insertions, 0 deletions

diff --git a/50.md b/50.md
index 9d1a54c..2a31cb1 100644
--- a/50.md
+++ b/50.md
@@ -26,6 +26,8 @@ Relays SHOULD interpret the query to the best of their ability and return events
 Relays SHOULD perform matching against `content` event field, and MAY perform
 matching against other fields if that makes sense in the context of a specific kind. 
 
+Results SHOULD be returned in descending order by quality of search result (as defined by the implementation),
+not by the usual `.created_at`. The `limit` filter SHOULD be applied after sorting by matching score.
 A query string may contain `key:value` pairs (two words separated by colon), these are extensions, relays SHOULD ignore 
 extensions they don't support.
 
@@ -47,3 +49,7 @@ Relays SHOULD exclude spam from search results by default if they support some f
 
 Relay MAY support these extensions:
 - `include:spam` - turn off spam filtering, if it was enabled by default
+- `domain:<domain>` - include only events from users whose valid nip05 domain matches the domain
+- `language:<two letter ISO 639-1 language code>` - include only events of a specified language
+- `sentiment:<negative/neutral/positive>` - include only events of a specific sentiment
+- `nsfw:<true/false>` - include or exclude nsfw events (default: true)