画像には装飾画像・機能画像・情報画像がある。装飾画像ではaltテキストを省略しよう。機能画像では操作を記述しよう。情報画像ではメッセージを伝えよう。| U-Site
How users attend to information on a page depends on their tasks and goals, as confirmed by new eyetracking research. Good design promotes efficient scanning.| Nielsen Norman Group
Human working memory holds information relevant to the current task; a physical or virtual external memory can help in tasks with a high working-memory burden.| Nielsen Norman Group
Accessibility resources free online from the international standards organization: W3C Web Accessibility Initiative (WAI).| Web Accessibility Initiative (WAI)
