No frames other than the horizontal top and secondary frames described in the Navigation section of this guide. All content pages use a white background. It is as self-explanatory as possible without being wordy. One should be able to look at the top of the content area and immediately be reminded of where they are and what they were about to do.
Headers are important.
Choose wisely or collaborate with others when selecting Header text. Headers are left aligned. Do not use abbreviations in headers. All subheadings on a page are 20 characters or less. Sub-headings are left aligned.