Notes for panelStack-> in this example, there is a single panelStack within a form. The first part of the page shows the number of children in the server side component tree(ssct). Four stackPanes are children of the stack. Facelet is el bound to backing bean that has initial state of true. The children of each stackPane then will only be included in the ssct if that stackPane is selected/currentId. A table is also printed showing the components that are currently in the ssct Change the value of facelet to false and then all the children of all the stackPanes will be included in the ssct (default JSF behavior). click on the button to update the table to show all the components now.