You may be using a vendor supplied configuration, your system manager may have configured a slightly different environment, or you may have customized your environment, nevertheless this discussion of the environment ITS supports should be a reasonable guide for most new users of OpenLook on any Unix system. On those systems you'll have to use some other window manager. That includes the choice of window manager. Other choices are mwm , ncdlauncher , and twm . You can, with confidence, just play with it to learn what it does - you're not going to break anything and there should be no big surprises.
Many users do that without reading any documentation.
The remainder of this discussion documents how things work. First some terminology about the X11 environment. A virtue of X11 is that one can manage and display lots of applications. The interior of the window is managed by the application, the trim is managed by the window manager. The OpenLook trim is distinctive with a title at the top, an iconify button at the top left, and resize wedges in each corner.