* <p>Represents a single Tab in a {@link Ext.tab.Panel TabPanel}. A Tab is simply a slightly customized {@link Ext.button.Button Button},
* styled to look like a tab. Tabs are optionally closable, and can also be disabled. 99% of the time you will not
* need to create Tabs manually as the framework does so automatically when you use a {@link Ext.tab.Panel TabPanel}</p>
* <p>Represents a single Tab in a {@link Ext.tab.Panel TabPanel}. A Tab is simply a slightly customized {@link Ext.button.Button Button},
* styled to look like a tab. Tabs are optionally closable, and can also be disabled. 99% of the time you will not
* need to create Tabs manually as the framework does so automatically when you use a {@link Ext.tab.Panel TabPanel}</p>