A method comprising: causing definition of a display window in a displayed virtual scene wherein the virtual scene comprises a portion of a virtual space that falls within a field of view of a user, wherein the field of view is centered upon an orientation of the user and the virtual space comprises a plurality of display windows distributed throughout the field of view at different orientations from the user; displaying window content inside the display window , in the displayed virtual scene wherein content is rendered into the display window to represent the display window as a substantially flat projection surface displaying the window content ; in dependence upon a first user action, causing a first change in the window content displayed inside the display window to first window content different to the window content , without re-sizing the display window wherein the first window content is a distortion of content comprising the window content so that content in addition to the window content is viewed within the display window without variation to a size or resolution of the display window wherein the first window content is rendered into the display window to represent the display window as a curved projection surface displaying the first window content ; and in dependence upon a second user action, causing a second change in the window content displayed in the display window to second window content , different to the first window content and the window content , and causing a variation in the display window to become a modified display window different to the display window . causing definition of a display window in a displayed virtual scene wherein the virtual scene comprises a portion of a virtual space that falls within a field of view of a user, wherein the field of view is centered upon an orientation of the user and the virtual space comprises a plurality of display windows distributed throughout the field of view at different orientations from the user; displaying window content inside the display window , in the displayed virtual scene wherein content is rendered into the display window to represent the display window as a substantially flat projection surface displaying the window content ; in dependence upon a first user action, causing a first change in the window content displayed inside the display window to first window content different to the window content , without re-sizing the display window wherein the first window content is a distortion of content comprising the window content so that content in addition to the window content is viewed within the display window without variation to a size or resolution of the display window wherein the first window content is rendered into the display window to represent the display window as a curved projection surface displaying the first window content ; and in dependence upon a second user action, causing a second change in the window content displayed in the display window to second window content , different to the first window content and the window content , and causing a variation in the display window to become a modified display window different to the display window . <EOS>