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If you have any questions or comments about the accessibility of this site, feel free to email Web Communications.

Access keys

Most browsers support jumping to specific links by typing keys defined on the web site. On Windows, you can press ALT + an access key; on Macintosh, you can press Control + an access key.

The home page and all archives define the following access keys:

Access key 1
Home page
Access key 4
Search box
Access key 9
Access key 0
Accessibility statement

Standards compliance

  1. The home page, and all everything else validate as HTML 4 Transitional .
  2. The home page, and all everything else use structured semantic markup. For example, on pages with more than one day’s posts, H2 tags are used for dates, H3 tags for individual post titles. JAWS users can skip to the next day using ALT+INSERT+2, or the next post with ALT+INSERT+3.

Navigation aids

  1. All pages on this site include a consistent set of global navigation links.
  2. All pages other than the home page have a “breadcrumb” trail of links leading up to the home page.
  3. All pages on this site include a search box (access key 4).


  1. Many links have title attributes which describe the link in greater detail, unless the text of the link already fully describes the target (such as the headline of an article).
  2. Wherever possible, links are written to make sense out of context. Many browsers (such as JAWS, Home Page Reader, Lynx, and Opera) can extract the list of links on a page and allow the user to browse the list, separately from the page.
  3. Link text is never duplicated; two links with the same link text always point to the same address.
  4. There are no “javascript:” pseudo-links. All links can be followed in any browser, even if scripting is turned off.
  5. There are no links that open new windows without warning.


  1. All content images used on this site include descriptive ALT attributes. Purely decorative graphics include empty ALT attributes.

Visual design

This site and all its archives use cascading style sheets for visual layout.

  1. Internet Explorer has a limited text resizing feature (“View” menu, “Text Size”), but it only works with relative font sizes. A special stylesheet that uses relative font sizes is automatically served to visitors using Internet Explorer.
  2. If your browser or browsing device does not support stylesheets at all, the content of each page is still readable.

Accessibility references

  1. W3 accessibility guidelines, which explains the reasons behind each guideline.
  2. W3 accessibility techniques, which explains how to implement each guideline.
  3. W3 accessibility checklist, a busy developer’s guide to accessibility.
  4. U.S. Federal Government Section 508 accessibility guidelines.

Accessibility software and services

  1. HTML Validator, a free service for checking that web pages conform to published HTML standards.
  2. Web Page Backward Compatibility Viewer, a tool for viewing your web pages without a variety of modern browser features.
  3. JAWS, a screen reader for Windows. A time-limited demo is available.
  4. Lynx, a free text-only web browser.

Related resources

  1. WebAIM, a non-profit organization dedicated to improving accessibility to online learning materials.