9. A system, comprising: one or more data processing apparatus; and a computer-readable storage device including instructions executable by the data processing apparatus and upon such execution cause the data processing apparatus to perform operations comprising: receiving an output of performing an image capture process on a rendered document; determining that the output includes a particular symbol; determining a particular action that is associated with the particular symbol; and transmitting an instruction to a document management system to perform the particular action.
9. A system, comprising: one or more data processing apparatus; and a computer-readable storage device including instructions executable by the data processing apparatus and upon such execution cause the data processing apparatus to perform operations comprising: receiving an output of performing an image capture process on a rendered document; determining that the output includes a particular symbol; determining a particular action that is associated with the particular symbol; and transmitting an instruction to a document management system to perform the particular action. 16. The system of claim 9 , wherein transmitting the instruction to the document management system to perform the particular action comprises transmitting an instruction causing a control program to be executed.