When you log in at a terminal, the default window manager Fluxbox is already running in order to handle the windows on the display.
Fluxbox is a window manager that is based on the code from BlackBox. It is pretty lightweight and tries to leave you with as much screen space to yourself as possible. It provides multiple desktops, tabs (a useful feature if you get to know it) and many other bits and pieces.
Fluxbox allows you to switch between workspaces, and move windows between workspaces.
The following is a brief list of some useful shortcuts you can use in Fluxbox:
*These are CSE-specific keybindings. Please see http://www.cse.unsw.edu.au/faq/questions/other-fluxbox.html/ for information on how to modify these yourself.
There are many more options associated with the use of Fluxbox. For more information on the Fluxbox window manager and its features see http://www.cse.unsw.edu.au/faq/questions/other-fluxbox.html.