COMMON INPUT/OUTPUT INTERFACE FOR APPLICATION PROGRAMS

A user interface through which multiple application programs can be operated in common. An information processing apparatus provides a common input/output interface to multiple application programs. The apparatus includes a section which converts an application-specific document generated by each of the plurality of application programs and represented in a data structure specific to the application program to a common document represented in a common data structure; a section which presents the common document to a user; a section which inputs an operation performed by the user on the common document; an interface adapter which converts an object contained in the common document to an object used in the output section; a section which modifies the common document in accordance with an operation by the user; and a section which reflects modifications to the common document in the application-specific document.