I want to add tabs in OnsenUI to Notepad samples

Thank you for your help.

I would like to add a tab sample function to the Notepad sample.

<ons-tabbar>
    <ons-tabicon="home" label="Home" page="StopWatch.html" active="true">/ons-tab>
    <ons-tabicon="comment" label="Comments" page="page2.html">/ons-tab>
    <ons-tabicon="gear" label="Settings" page="page3.html">/ons-tab>
</ons-tabbar>

I thought it would be possible to copy the above and create the HTML, but I can't.

I am very sorry for the rudimentary question, but I would appreciate it if you could answer it.