(a) blink or flash – in which the items are intermittently displayed at a rate that can be readily perceived;
(b) brilliance – in which a noticeable difference in illumination is applied in a steady state;
(c) reverse video – in which the character is displayed in the opposite contrast to the surrounding information, e.g. by substituting black for white and vice versa;
(d) underline – in which a line, usually displayed at the same brilliance or blink rate as the associated character, is drawn beneath the character;
(e) color – the color of the item and its background may be controlled individually.
"VDU." A Dictionary of Computing. . Encyclopedia.com. (July 20, 2018). http://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/vdu
"VDU." A Dictionary of Computing. . Retrieved July 20, 2018 from Encyclopedia.com: http://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/vdu
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"VDU." The Oxford Dictionary of Abbreviations. . Encyclopedia.com. (July 20, 2018). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/vdu
"VDU." The Oxford Dictionary of Abbreviations. . Retrieved July 20, 2018 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/vdu