markup

Short definition from Wiktionary

Noun

1. 1
   The percentage or amount by which a seller hikes up his buy-in price when determining his selling price.
2. 2
   An increase in price.
3. 3
   The notation that is used to indicate the meaning of the elements in an electronic document, or to dictate how text should be displayed.
4. 4
   The process by which proposed legislation is debated and amended.