diff --git a/README.md b/README.md
index ca0e78d..3b51c2f 100644
--- a/README.md
+++ b/README.md
@@ -76,6 +76,16 @@ If you only have pre-built binaries:
 "ptth_file_server" is not needed for production. It's a standalone build of
 the file server module, for testing.
 
+To run the relay behind Nginx, these directives improve time-to-first-byte
+when streaming:
+
+```
+client_max_body_size 0;
+proxy_http_version 1.1;
+proxy_request_buffering off;
+proxy_buffering off;
+```
+
 ## Comparison with normal HTTP
 
 Normal HTTP:
@@ -176,14 +186,14 @@ ptth_server and ptth_file_server use the `file_server` module. ptth_server
 will connect out to a ptth_relay instance and serve files through the reverse
 HTTP tunnel.
 
-The http_serde module is shared by ptth_relay and ptth_server so that they
+The `http_serde` module is shared by ptth_relay and ptth_server so that they
 can communicate with each other easily.
 
 ## Why are GitHub issues disabled?
 
 Because they are not part of Git.
 
-For now, either email me (if you know me personally) or make a pull request to add an item to todo.md.
+For now, either email me (if you know me personally) or make a pull request to add an item to [todo.md](todo.md).
 
 ## License
 
diff --git a/todo.md b/todo.md
index 4f10a06..d09be5b 100644
--- a/todo.md
+++ b/todo.md
@@ -1,4 +1,5 @@
-- Add byte counter in `trace!()` macro in the file server
+- "Preview as" feature for Markdown / pretty-printed logs
+- Add Prometheus metrics
 - Not working great behind reverse proxies
 - Show file server names in HTML