Usability Contd'

1
Usability Contd.

• Writing for Usability

2
Text

• Readability
• Scannability
• Legibility

3

• Readability (ease of reading content) Because
  the screen is much harder to read than a printed
  page . . .
• Use 50 of the amount of text on the Web that you
  would in print.
• Sentences should be concise and direct.

4

• Scannability is the ability of the eye to scan a
  page and quickly glean important information
• Keep paragraphs short (1-3 sentences each is
  common)
• Use subheadings that summarize each unit of
  information.
• Paragraphs are single-spaced and first line is
  not indented.
• Double space between paragraphs.
• Use bulleted and numbered lists when possible.
• People resist scrolling horizontally, but they
  will scroll vertically to follow information of
  interest. If a page gets too long, break it up
  into separate links.
• Write for both searchers and linkers.

5
(No Transcript)
6
Legibility (ease of reading letter forms)

• Make type large enough and simple enough to be
  read. Times Roman, Arial, and Verdana are
  commonly used for body textnot only because they
  are legible but because they are also commonly
  available on the end users computers, whereas
  other fonts will not read properly in HTML if the
  end user doesnt have them installed.

7
QUESTIONS on TEXT USABILITY?