that represents the title of the item.</td></tr><tr><td class=CDLEntry>icon</td><td class=CDLDescription>URL of the icon that represents the item.</td></tr><tr><td class=CDLEntry>ptype</td><td class=CDLDescription>Function or object that represents the prototype cell.&nbsp; If ptype is a function then it is invoked with no arguments to create new instances.</td></tr><tr><td class=CDLEntry>pressed</td><td class=CDLDescription>Optional URL of the icon that represents the pressed state.</td></tr><tr><td class=