Howto auto-indent all lines

Home.md

@@ -9,4 +9,11 @@ set tabstop=2
 set softtabstop=2
 set shiftwidth=2
 syntax on
-```
+```
+
+### Auto indent all lines
+
+**=**, the indent command can take motions.
+So, **gg** to get the start of the file, **=** to indent, **G** to go to the end of the file:
+
+`gg=G`