Also, calling fmt, ioutil and os "builtin" is probably confusing.
R=adg
CC=golang-dev
https://golang.org/cl/965045
import (
"fmt"
"io/ioutil"
+ "os"
)
</pre>
<p>
-Both <code>fmt</code> and <code>ioutil</code> are built-in packages that
-we'll be using. Later, as we implement additional functionality, we will add
-more packages to this <code>import</code> declaration.
+We import the <code>fmt</code>, <code>ioutil</code> and <code>os</code>
+packages from the Go standard library. Later, as we implement additional
+functionality, we will add more packages to this <code>import</code>
+declaration.
</p>
<h2>Data Structures</h2>
"fmt"
<b>"http"</b>
"io/ioutil"
+ "os"
)
</pre>