diff --git a/doc/man/_commands.txt b/doc/man/_commands.txt
index 55e9113..b7acbd4 100644
--- a/doc/man/_commands.txt
+++ b/doc/man/_commands.txt
@@ -33,3 +33,6 @@ write(!)
 
 export
   Export attachments
+
+dump
+  Write values, descriptions, etc. of all current settings to a file.