Base Identifies the folder containing the selected applet. When you choose an applet, this field is filled automatically. Align Determines how the object is aligned on the page. See Aligning elements for a description of each option. V Space and H Space Specify the amount of white space in pixels above, below, and on both sides of the applet.
Parameters Opens a dialog box for entering additional parameters to pass to the applet.
See About parameters . Many applets respond to special parameters.