In addition to outlining a method for adding a new window, we shall give code fragments for a trivial example. We shall call this sample implementation the Trial panel. The Trial panel will simply be a set of text fields, one for each phase space variable. The user will be able to enter a value for each variable. There will be a single settings item which will allow the user to select a single phase space variable. Finally, there will be a button. When the user presses the button, the new code should set the value of the selected variable to be the value given in the Trial window. The change in value of this coordinate should be reflected in dstool's Selected Point window. The code necessary for a full implementation of this example is included with dstool's source code in the directory $DSTOOL/src/trial.