diff --git a/README.md b/README.md
index 5b9b8a3..051ac33 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,12 @@ A command-line tool to fetch [Blacklight](https://themarkup.org/series/blackligh
 
 - `nvm use`
 - `npm install`
-- `./blacklight-query urls.txt`
+- `./blacklight-query urls.txt` where `urls.txt` has newline-separated absolute URLs to scan
+
+## You can use pipes
+
+You can also pipe your list of URLs.
+
 - `echo "https://themarkup.org/ | ./blacklight-query`
 - `./blacklight-query < urls.txt`