Image; Picture; Representation
Originally, the Greek word eikon stood for an image, carrying some meaning as in typical portraits of sacred persons within the Orthodox Church. An operational definition of icon was given by Peirce  as anything that stands for something else, to somebody, in some respect or capacity. Being so general, it covers most customary practices, typically linking linguistic, pictorial (or even auditory) expressions to a meaning that needs to be interpretedby a human. In general discourse, an icon may imply an idol (as a pop star) or a symbol (the Rotary wheel worn on coat lapels) that represents a group of persons or a life style (the Nike symbol for sports). Within Human-Computer Interaction, the common understanding of an icon is to consider it as a visual metaphor representing a file, a directory, a window, an option or a program. Whenever a number of icons are presented together, this group is referred to as an icon bar, generally at...
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