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What would you use as icon to expand a box including some details (i.e. regarding a product specification)? Would you use the same icon to expand details about a single datum in an array of data (such as a data table)?

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I would use an arrow but would also put a text label to clarify the button:

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Another option are the three dots, also commonly used to indicate 'more'.

enter image description here

  • Yes, I usually put a text label on every icon. So would you comunicate the interaction instead of the semantic meaning of the content? – Daniele Begotti Sep 1 '16 at 12:23

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