fixes

1-js/01-getting-started/3-devtools/article.md

@@ -50,6 +50,12 @@ Open Preferences and go to the "Advanced" pane. There's a checkbox at the bottom
 
 Now `key:Cmd+Opt+C` can toggle the console. Also, note that the new top menu item named "Develop" has appeared. It has many commands and options.
 
+## Multi-line input
+
+Usually, when we put a line of code into the console, and then press `ley:Enter`, it executes.
+
+To insert multiple line, press `key:Shift+Enter`.
+
 ## Summary
 
 - Developer tools allow us to see errors, run commands, examine variables, and much more.