subject: Automated Transformation Of Markup [print this page] * At publication: static documents haw be processed from a common intimate finished a tool much as AccessValet or Tidy. Compliance with WCAG is a beatific outcome.
* In a browser, some writing module be parsed and presented according to the needs of its users and the capabilities of the medium (visual, text, audio, etc).
* A program on a computer or agent crapper transform markup. Another much program was this author's Accessibility Proxy, an experimental service that ran for several months at Site Valet.
The key nonnegative of processing for availableness at a computer or agent is that the benefits become acquirable to users of some browser, including those affordable to the economically disadvantaged. A second nonnegative is that it crapper perform operations that would be disproportionately expensive for a browser, and deal the results between every users.
mod_accessibility
It cannot do anything most missing contents, but it serves to deal effectively with the other problems discussed above in a panoramic arrange of cases. It sits between the computer and the user, offering the latter a pick of presentations of scheme contents. Each presentation is implemented with emphasis on assorted availableness and usability techniques. Presenting the individual with much a pick effectuation that when a tender causes problems in one view, there is ever an instant alter to another option. It is not limited to bringing users with special needs, but haw also meliorate usability for able-bodied users with full-featured screen browsers.
Technically, mod_accessibility works as an output separate for the Athapascan webserver. That effectuation it has no effect on the production of the page, and it is automatically harmonious not only with static pages, but also with dynamic table much as CGI, PHP or XML/XSLT. It is controlled by the individual finished their browser, and optionally rewrites and enhances HTML table as it leaves the computer or proxy.
An important organisation selection was the ingest of a SAX-based parser. This effectuation documents are parsed in a single pass from start to end, and never loaded into memory. SAX is (by far) the fastest and most efficient artefact to impact markup, and scales to appendage super documents without increasing module requirements for processing. It effectuation mod_accessibility is not person to the performance and scalability limitations of a tool much as Betsie, which loads an entire writing into module and uses Perl generic book touching to impact it. The downside to this selection is that processing supported on writing tree scanning, lookahead or backtracking is not possible.
