There is disclosed, as an example, an output information generation method in an information processor capable of synthesizing multiple data in insertion areas defined in form information to generate output information, the method comprising: a registration step of registering multiple data with priorities and multiple form information having form information corresponding to the respective priorities in a storage unit; a direction step of directing generation of output information by specifying any of the multiple data and any of the form information stored in the storage unit and directing generation of output information; and a generation step of selecting form information corresponding to the priority of each of the data specified by the direction step and synthesizing the multiple data into the insertion areas in the selected form information to generate output information.