In Step 16 you have the following:
Pretty straightforward, this one. Choose from several standard highlighter pen colours to highlight your text. (Note that to change the highlighter pen colour via the toolbar, click and hold the Highlight toolbar icon for a second; you will need to add the Highlight icon to the toolbar via Edit > Customize Toolbar first.)
The Customize Toolbar is actually found under View NOT Edit.
See! I did read it and go through it for v. 1.5!!