The button's unique identifier.
If the button's events are not going to be used the id is not required.
Default Value: Empty.
label
The text used as the button's label. Not require if the button will only show an icon.
Default Value: Empty.
icon
The icon class from a Font Awesome icon.
Default Value: Empty.
targetPage
The page's identifier which will be selected/show when the button is clicked. This also works with silk:Modals.
If opening a page/modal is the only button's functionality then an id is not necessary.
Default Value: Empty.