diff --git a/man/retro.1 b/man/retro.1
index 0a47b1a..9666b00 100644
--- a/man/retro.1
+++ b/man/retro.1
@@ -1,4 +1,4 @@
-.Dd Setember 2019
+.Dd June 2020
 .Dt RETRO 1
 .Os
 .Sh RETRO
@@ -19,7 +19,7 @@ It's clean, elegant, tiny, and easy to grasp and adapt to various uses.
 
 .Nm
 is the main interface for interacting with Retro. It provides both
-an interactive and a scripting  model.
+an interactive and a scripting model.
 .Sh OPTIONS
 .Bl -tag -width -indent
 .It Fl h
@@ -39,5 +39,9 @@ Load and run the code in the specified image file rather than the integral one.
 .It filename script-args
 Run code blocks in a single file. Pass script-args to the code being run.
 .El
+
+If invoked with no arguments,
+.Nm
+will run in interactive mode.
 .Sh AUTHORS
 .An Charles Childers Aq Mt crc@forthworks.com