1. A computer-implemented method comprising: enabling selection, through a gesture having a start point at an edge of a multi-application immersive environment and a later point not at another edge of the multi-application immersive environment, to display a new immersive interface of a new application in a selected region of multiple regions of a multi-application immersive environment, the selected region corresponding to the edge of the multi-application immersive environment, the multi-application immersive environment displaying a current immersive interface that fully occupies the multi-application immersive environment, the current immersive interface displaying content at a current size and in a current arrangement, the new immersive interface of the new application not displayed in the multi-application immersive environment prior to receiving the selection; and responsive to the selection to display the new immersive interface in the selected region: displaying the new immersive interface at a size fully occupying the selected region; and resizing the current immersive interface to fully occupy a different region of the multiple regions that does not occlude the selected region, the resized current immersive interface displaying content at a different size and a different arrangement from that of the current size and the current arrangement.