There's more than one usage of the word markup. For generic discussions of markup in various contexts, see: Markup language, a type of artificial language (and specifically a computer language) that's used to annotate a document's content to give instructions regarding the structure of text or how it's to be displayed Markup (business), a term for the increase in the price of goods to create a profit margin for a business Markup (legislation), a legislative session held to amend bills MarkU… (More on Markup)