




 
This section discusses the immediate subclasses of 
choice
 which can be used to build button panels. If you have a group of several buttons, you can use the appropriate 
button-panel
 element to specify them all as a group, rather than using 
push-button
 or 
check-button
 to specify each one separately. There are three such elements altogether: 
push-button-panel
, 
check-button-panel
 and 
radio-button-panel
. The specifics of each are discussed below.