Commands are ways to execute actions after clicked by a user.
<tc:link label="Apache Website" link="https://www.apache.org"/>
<tc:button label="Submit"/>
<tc:buttons>
<tc:button label="Left" omit="true"/>
<tc:button label="Center" omit="true"/>
<tc:button label="Right" omit="true"/>
</tc:buttons>
<tc:links>
<tc:link label="Apache Website" link="https://www.apache.org"/>
<tc:link label="Wikipedia" link="https://en.wikipedia.org/wiki/Apache_Software_Foundation"/>
</tc:links>