1. An image forming apparatus comprising: a display section to display screens for setting a function; a control section to form an image where alternatives of a function to be set by transiting plural screens are aggregated and arranged on one page of sheet, and to form a composite image where a position detection code for identifying a position on the sheet is combined with the image; a memory section to store a table which correlates each of the alternatives with a position of each of the alternatives on the sheet; and a print section to print the composite image on the sheet, wherein in cases where the control section acquires the position information having been identified of the position by the position detection code on the sheet, the control section refers to the table to identify an alternative corresponding to the position information, and sets a function based on the identified alternative.