They are small but vital for the efficiency rate of any application or website. They look simple but take loads of time and effort to feel that way. They follow you on any step of interaction with a product although users rarely – say never – think how important they are for the success and speed of this interaction. They have the power to do anything with a user: help, support, engage, encourage, clarify, simplify or vise versa confuse, annoy, disorient and so on and so forth. They are iconic in effective user interface. They are icons.
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