The label element associates a label with a form control.
For more information consult
Labels in Accessibility.
Labels
Labels are the names and terms used throughout a website
that identify menu options, site categories or other
elements. For more information consult
Labels in Navigation
Landmark Roles
WAI-
ARIA defines
document
landmark roles to help define the structure of a document. They
not only help people who use assistive technology orientate themselves
within a document they also provide a mechanism to navigate documents.
For more information consult
Landmark Roles.
lang Attribute
An easy accessibility feature to add to HTML documents is the
language attribute lang="en-us" to the
HTML
tag to identify the primary natural language of a document.
For example:
<html lang="en-us">
The "en-us" means English as spoken and written in the
United States. Identifying language helps a user agent to
display text appropriately for that language. For example,
assistive technologies can be fluent different languages, and if the
language is not indicated in the document using the lang
attribute, then it applies the rules of whatever language has
been selected the default in its settings.
If language changes inside a document it should also be
indicated. For instance if you
have French words or phrases in a document, you should use
lang markup for them, e.g.
<span lang="fr">Loire</span>
For more information consult
Language.
Layout Table
A table that uses rows and columns to organize content
visually on the screen. In a layout table, the positioning of
content in particular cells does not imply a relationship to
the content in other cells as it does in a data table.
Leading
The difference between the values of line-height and
font-size. It is the extra space between the lines of text
above and below the font's size.
Legibility
Legibility indicates how clear text is visually.
Likert Scale
A likert scale is a type of question where respondents
are asked to rate the level at which they agree or disagree
with a statement. For instance on a scale from one to five a
user can strongly disagree or strongly agree with a
statement.
Linearized Table
A table rendering process where the contents of the cells
become a series of paragraphs (e.g., down the page) one after
another. The paragraphs will occur in the same order as the
cells are defined in the document source.
Line-Box
In
CSS a line-box is
the box that bounds the highest and lowest points of the
inline boxes that are part of the line. In other words it is
the distance from the top of the highest inline box in the
line to the bottom of the lowest inline box in the line. A
line-box is as tall as the inline boxes within a line. That
is, the top of the tallest inline box and the bottom of the
lowest inline box define the top and bottom of the line-box.
That determines the separation between baselines.
Line-Height
This style sheet property determines the amount by which
the height of each element's line box is increased or
decreased. Basically it is not a set measurement, but a
calculation. In
CSS
line-height is the difference between the values of
line-height and font-size for a given element. The
line-height property specifies the logical height of an
inline element. This is the height used in the vertical
alignment of inline elements and the construction of line
boxes. It defines the height of the inline box for a given
element. It determines the amount by which the height of each
element's linebox is increased or decreased.
Lines Per Inch
Lines Per Inch (LPI) is a vertical measure of density but
it's not worth worrying about. If you're have your Dots Per
Inch high enough then you won't have Lines Per Inch problems
and you don't have to bother with it. It refers to the frequency
of horizontal and vertical lines on a halftone screen. I think
Photoshop occasionally brings up the subject of LPI just to
make sure amateurs continue to find it impenetrable. When you
come across the term, think of LPI as around half or two thirds
of dots per inch and you won't go far wrong.
link Element
The link element defines the relationship between two
linked documents. It goes in the head section, but it can
appear repeatedly.
Link Rot
Link rot is the degeneration of a web page due to the
links that become invalid. For more information consult
Link Rot.
Liquid Design
A liquid designed web page re-scales to fit different
resolutions and different window sizes. For more information
consult
Liquid Design.
Local Navigation
Local navigation is a type of navigation where choices
lead to subtopics defined by one of the main menu
subjects.
Logical Operators
In programming, logical operators are used to combine
conditions, so that multiple conditions can be evaluated
together as a single expression. For instance, they allow a
script to determine the status of conditions and in the
context of if...else or while statements and execute code
based on which conditions are true or false.
longdesc attribute
An HTML attribute, which can be added to an
<img>
element. It provides a
semantic,
programmatically
determinable link to a long description. The
longdesc value must be the URL
to a separate long description page or a fragment/anchor
in the same page. The value should not contain the long
description text itself.
Look and Feel
Look and feel is the visual appearance that identifies a
web site. It is comprised of a consistent color scheme,
layout, typography, design treatments and graphic elements -
all of which should work in harmony.
Lorem Ipsum
Lorem Ipsum or Lipsum is random text. It is a common
piece of garble that designers use as mock-content when
testing layouts. It has been well established that if you
write anything in a sample layout or design, people will
spend more time reading the copy than looking at the full
concept. "Lorem ipsum dolor" is sufficiently like ordinary
text to show "text goes here" but it doesn't distract the
reader. For more information consult
lipsum.com.
Low Vision
The term used to describe a person who is without a
significant measure of vision but is not totally blind.
Lynx
A text only browser that is popular in amongst UNIX
users, and commonly used by people with disabilities and
those in low bandwidth areas. It can be downloaded
from the Lynx site.
