Website Accessibility Report 7
Web Content Accessibility Guidelines
Guideline 4. Clarify Natural Language Usage
The natural language of a document is important for speech synthesizers and braille devices. When a different language is used, it is important that the computer can tell which language is being used so as to keep the screen reader using the correct language so it all makes sense. There should also be ways for abbreviations and acronyms to be expanded out so that people who don't know what these mean will be able to understand what is being said. Multilingual users will more than likely need these helps in order to get all the information across in the most timely manner. Using a language markup will also help search engines to find the information in your site in the language provided. People with learning disabilities and others will also greatly benefit from these markups. Unidentifiable content in a page is not a good thing to have.
In order to implement this guideline most thoroughly, it is important that the lang attribute is put specifically in the html element (or in XML, use xml:lang), in order to provide the language in which the site is presented. The abbreviations and acronyms in a site can be confusing when machine-spoken or written in braille, so it is important to have ways to expand these into more meaningful text. This can be done by using the title attribute in the ABBR and ACRONYM elements. This will help keep your content clear and understandable. The primary natural language of a document should be provided so that clients can automatically retrieve documents of the preferred language.