<short header of some sort>

<statement about the fact that there P2s and P3s are in another document>

[PRIORITY 1]
This checkpoint must be addressed by an author, or one or more groups of users will find it impossible to access information in the document. Satisfying this checkpoint is a basic requirement for some groups to be able to use Web documents.

Priority 1 checkpoints only

General

Checkpoint YesNoN/A
Priority 1 items only
A.5.1 Don't use color to convey information unless the information is also clear from the markup and/or text.    
A.5.2Use foreground and background color combinations that provide sufficient contrast when viewed by someone with color deficits or when viewed on a black and white screen.    
A.9.4For pages that use style sheets, ensure that the contents of each page are ordered and structured so that they may read in the intended order even when the style sheet is not used.    
A.10.1For auto-refreshing or timed response pages, provide a second copy of the page where refresh only happens after a link has been selected (until user agents provide this ability themselves).    
A.10.2 Avoid any blinking or updating of the screen that causes flicker.    

If you use images and image maps...

Checkpoint YesNoN/A
Priority 1 items only
A.1.1 Provide alternative text for all images (e.g., in HTML, via the "alt" attribute of the IMG and INPUT elements, or via "title" or within the content of OBJECT). Note. This includes images used as image maps, spacers, bullets in lists, graphical buttons and links.    
A.1.3For all image map links, provide alternative text for each link (e.g., via the "alt" attribute of HTML AREA element).    
A.1.6 Replace ASCII art with an image and alternative text. [+P1] or [+P2] depending on the importance of the information (e.g., an important chart). Note. If the description of (important) ASCII art is long, provide a description in addition to alternative text. [+Gdescriptions]    
A.2.1Provide a long description of all graphics, scripts, or applets that convey important information (e.g., in HTML, via "longdesc" on IMG, with a d-link (or an invisible d-link), or as content of OBJECT).    
A.12.1For image maps, provide alternative text for links. [+Galternative-text]    

If you use tables...

Checkpoint YesNoN/A
Priority 1 items only
A.8.1If a table is used for layout, do not use any structural markup for the purpose of visual formatting. Should this be Pri 1? For example, in HTML do not use the table header (TH) element to cause the contents of a cell to be displayed centered and in bold. Other attributes of a table, such as a caption describing the layout purpose and content of columns is valuable, particularly if some cells become navbars, frames, images, imagemaps, or lists of links.    

If you use frames...

Checkpoint YesNoN/A
Priority 1 items only
A.9.1For frames, provide a fallback page for pages that contain frames (e.g., by using NOFRAMES in HTML at the end of each frameset).    
A.9.2For frames, ensure that the source of each frame is a markup file, such as HTML.    
B.1.1 Name each frame so that users can keep track of frames by name (e.g., via the "title" attribute on HTML FRAME elements).    

If you use applets and scripts...

Checkpoint YesNoN/A
Priority 1 items only
A.1.2 Provide alternative text for all applets and other programmatic objects (e.g., in HTML, via the "alt" attribute or within the content of APPLET, or via the "title" attribute or within the content of OBJECT). [+Gown-interface]    
A.9.3For scripts that present critical information or functions, provide an alternative, equivalent presentation or mechanism (e.g., by using NOSCRIPT in HTML, or a server-side script).    

If you use multimedia...

Checkpoint YesNoN/A
Priority 1 items only
A.3.1For stand-alone audio files, provide a textual transcript of all words spoken or sung as well as all significant sounds.    
A.3.2For audio associated with video, provide a textual transcript (of dialog and sounds) synchronized with the video (e.g., captions).    
A.3.3Where sounds are played automatically, provide visual notification and transcripts. [+P1] or [+P2] depending on the importance of the sound.    
A.4.1For short animations such as animated "gifs" images, provide alternative text [+Galternative-text] and a long description [+Gdescriptions] if needed.    
A.4.2For movies, provide auditory descriptions that are synchronized with the original audio.    
A.4.3 Provide text version of the auditory description that is collated with the text transcript (captions) of the primary audio track.    

If all else fails...

Checkpoint YesNoN/A
Priority 1
A.14.3If, after all of your best efforts, you can not avoid using a non-W3C technology or any W3C technology in an accessible way then you MUST provide a link to an alternative page that:
  • uses W3C technologies,
  • is accessible,
  • has equivalent information,
  • is updated as often as the inaccessible (original) page
   
Note. Alternative pages should be used sparingly since authors tend to neglect updating the alternative page as often as the original page. An out-of-date page may be as frustrating as one that is inaccessible since, in both cases, the information presented on the original page is not available. Automatically generating alternative pages can make it easier to keep up with updates. However, authors must be careful to ensure that generated pages always make sense and that users be able to navigate a site by following links on primary pages, alternative pages, or both.. Before resorting to an alternative page you may want to reconsider the design of the original page. A page that is too elaborate may deter a larger audience than you might expect.