3. The information processing system as set forth in claim 1 , wherein the display layout control section further comprises a display layout switching section for switching from one display layout to another while editing the shared file.
1. An information processing system comprising: (i) a first information processing terminal including (a) a storage section for storing a shared file having a plurality of sectional regions in one page and (b) an exclusion control processing section for managing access to the sectional regions in the shared file so as to carry out exclusion control with respect to the sectional regions on a regional basis, in order to allow concurrent editing of the shared file; and (ii) at least one second information processing terminal (a) connected to the first information processing terminal communicably and (b) including a display layout control section for controlling a display section so as to cause the display section to display display target page in the shared file with a predetermined display layout, a display layout storage section for storing at least one display layout, and an exclusion control state display processing section for causing each sectional region of the display target page in the shared file to be displayed in a display mode according to the state of the exclusion control carried out by the exclusion control processing section, each of the at least one display layout being designed such that with respect to each of the at least one second information processing terminal and according to each user or each object of editing, the display position and display size of a sectional region editable by a user of one of the at least one second information processing terminal and a sectional region uneditable by the user in individual pages of the shared file are determined in advance, the display layout control section causing the display section to display sectional regions in a display target page according to a display layout selected, by a user of one of the at least one second information processing terminal including that display layout control section, from the at least one display layout stored in the display layout storage section included in said one of the at least one second information processing terminal, the sectional regions being a sectional region editable by the user and a sectional region uneditable by the user.