Changes

<cd:description>Use this command to change the inter-character spacing (known as tracking). The <code>\stretched</code> command is actually just a frontend for the <code>\kern</code> command. And the value of <code>factor</code> isn’t multiplied by the kerning specified by the font, but rather added to it. So, to decrease the distance between characters, <code>factor</code> should be negative. And to increase it, <code>factor</code> should be positive.</cd:description>