The fileformat is as indicated in the Display Buttons.

Writes a picture (if a picture has been rendered). Changes the window to a FileWindow, making Blender files accessible as a directory Changes the window to a FileWindowĪppends parts from other files, or loads as Library-data. Opens menu with manipulator orientation choices Opens menu with manipulator type choices (Press 2, 3, 4, or 5 to change the widget type) This key always cancels Blender functions without changes or: FileWindow, DataView and ImageSelect: back to the previous window type or: the RenderWindow is pushed to the background (or closed, that depends on the operating system) Lasso select: drag the mouse to form a freehand selection area Toggle between maximised and normal window size, same as using previous shortcut Maximise the window or return to the previous window display size