Markup or mark-up can refer to:
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Markup language, a standardized set of notations used to annotate a plain-text document's content to give information regarding the structure of the text or instructions for how it is to be displayed
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Lightweight markup language, notation that adds basic markup to a client
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Markup rule in economics, a formula for the ratio of a monopolist's chosen price to its marginal cost
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Markup (business) a term in retail business describing the increase in the price of goods to cover expenses and create a profit margin
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Markup (legislation), the process to amend bills
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The Markup, American nonprofit organization publishing data-driven journalism
