The function called when any of the plugin buttons is clicked. It defines the buttons used with the plugin and the plugin behavior when they are clicked.
| Name | Type | Description |
| buttonIndex | number | Defines the button index in the buttons array of the config.json file. If id == -1, then the plugin considers that the Close window cross button has been clicked or its operation has been somehow interrupted. |
window.Asc.plugin.button = function (id) {
this.executeCommand("close", '');
};