1. A method performed by a data processing apparatus, the method comprising: receiving, at a computing device, text captured from a rendered document during a text capture operation; receiving, at the computing device, supplemental information including information relating to circumstances under which the text capture operation was performed, the information relating to circumstances under which the text capture operation was performed comprising a geographic location at which the text capture operation was performed to capture the text from the rendered document; determining, by the computing device and based on the supplemental information including the geographic location at which the text capture operation was performed to capture the text from the rendered document, an action to be performed on the captured text; and causing the action to be performed on the captured text.
9. The method of claim 1 , wherein determining the action to be performed comprises customizing presentation of content based on the supplemental information.