diff --git a/RUNNING.md b/RUNNING.md
index 7bac508..2ad865d 100644
--- a/RUNNING.md
+++ b/RUNNING.md
@@ -25,3 +25,19 @@ This will sync up a specified blocklist (any blocklist you want) to a specified
 
 For more information on how to configure the push file, or a greater explanation of the fundamentals of this process, see [How to Sync up Blocklist Changes From Trusted Sources](https://writer.oliphant.social/oliphant/how-to-sync-up-blocklist-changes-from-trusted-sources).
 
+
+---
+
+## Configuration
+
+The list of blocklist sources can be found in the [/config/pull.conf.toml](/oliphant/blocklists/src/branch/main/config/pull.conf.toml).
+
+These initial sources are pulled down, with each of them being saved as an intermediate file.
+
+The `fedisync.sh` script renames each of these source lists to a more friendly name (like mastodon.social.csv)
+
+The remaining steps are performed on these sourcefiles, not pulled from urls.
+
+If you customize the list of sources in `pull.conf.toml` you should also update them in the various `config/*.conf.toml` files as needed.
+
+You will likely also need to customize the `fedisync.sh` to your needs as well if you make these changes.