diff --git a/guides/source/migrations.md b/guides/source/migrations.md
index 6f9b435c5c..f02e86b420 100644
--- a/guides/source/migrations.md
+++ b/guides/source/migrations.md
@@ -235,6 +235,8 @@ adding these columns will also be created. For example, running
 $ rails generate model Product name:string description:text
 ```
 
+TIP: All lines starting with a dollar sign `$` are intended to be run on the command line.
+
 will create a migration that looks like this
 
 ```ruby