When inserting an anchor link within the rich text field in web/landing pages, or the blog's editor, please provide some extra parameters in its Advanced dialog:
Classes - A text field that lets you type in multiple classes. E.g. Typing class1 class2 would output as: class="class1 class2"
ID - A text field that lets you type a unique ID. E.g. Typing id1 would output as: id="id1"
Title - A text field that lets you type in tooltip text. E.g. Typing External link would output as: title="External link"