This component provides a way of grouping other components so that they can be displayed and hidden as a group, all together at the same time.
Any components required can be added to the panel and then displayed or hidden as a group with a line such as:
panel1.visible:=true;
panel1.visible:= false;
You might use a panel to issue a warning and offer a choice of options about an action chosen by the user (this could also be done via a message box).
There is an example of the use of a Panel in the Traffic Lights page.