...
 | Use for primary and secondary actions. | |
 | Use in areas where dialog buttons won’t comfortably fit, such as toolbars and tables. | |
 | Use when there are multiple related actions, with one primary action (e.g. the most frequently used). | |
 | Use to quickly switch between binary options, e.g. On/Off. | |
 | Use within the Ribbon component. |
...