Design that continues to work with earlier versions of a
user agent, language, program, etc.
BANA (Braille Authority of North America)
BANA sets codes and rules used Braille in North America.
Baseline
Baseline (in
WCAG
2.0) is a set of technologies that a user agent (browser,
media player, screen reader etc.) is assumed to support and
have enabled. It may be set by the author or higher
authority. When an author makes a WCAG 2.0 conformance claim,
they must specify the baseline that they are using to make
that claim.
For more information consult
About
Baselines and WCAG 2.0.
Blindness
Blindness includes a variety of conditions involving
extreme (but not complete) or complete loss of vision.
Block Level Element
Block-level elements typically contain inline elements
and other block-level elements. When rendered visually, they
usually begin on a new line. Examples of block level elements
include paragraphs, headings, divs, and blockquotes.
Bobby
A discontinued website accessibility assessment tool
designed to locate and identify certain accessibility
problems within web pages, so that a web developer could
repair those problems. It analyzed web pages and checked for
those accessibility problems that can be checked for
automatically. It was a good first pass for checking your web
pages for accessibility.
Box Model
In Cascading Style Sheets, the box model refers to the
rectangular boxes that are generated for elements in the
document tree and laid out as specified in the visual
formatting model. Every element generates a box, which is
call the element box. As the word "box" implies, these are
rectangular in shape Each box is made up of a number of
parts. In the normal document flow, the element boxes of
block-level elements cannot overlap each other (floats and
positioning are the exceptions). In other words, the way a
page is laid out depends on the size of each and every box.
Going down the page, in broad terms, each box begins just
below where the previous one ends. For more information consult
Box Model.
Braille
A system of writing for individuals who have visual
disabilities. The Braille system includes letters, numbers,
and punctuation made up of raised dot patterns.
Breadcrumbs
Breadcrumbs are a type of web navigation where current
location within the website is indicated by a list of pages
above the current page in the hierarchy, up to the main page.
It not only shows users where they are currently located in
the site's architecture, but it also lets them back up levels
one at a time. It is a recursive path. For more information
consult
Breadcrumbs.
Browser
The software on a computer that allows websites to be
rendered so they can be "read" by users. This maybe a browser
that renders things visually, in a manner confined to text
only, or in any other manner that may be appropriate, such as
voice output.
Browser Style Sheet
This is the default style sheet within a browser. If a
designer declares no style rules, the defaults from the
browser are applied. Most browsers apply style sheets to all
web documents. Although these style sheets vary from browser
to browser, they all have common traits like black text, blue
links, purple visited links etc. These are referred to as the
"default" browser style sheet.
