In surveillance mode, the user has the possibility to start and stop
the refreshing of attributes, to set the attributes and their
properties, and to execute commands. It is also possible to run
predefined java-applications on the devices present in the tables.
Administrator mode
If the Device Tree is started with no argument, it is started in
administrator mode, which gives the user an aditional graphical
element to use, the device tree
which lets the user browse all the devices on the system, as well as
populate the command and attribute table with commands and attributes
from the system.