Back button and menu issue

Ionic Framework ionic-v3
1

Hi,

In the conference app I am not able to understand how the menu is enabled and back button is disabled in tabs page.
Also in tutorial how is menu disable as when I am doing in tutorial page
ionViewDidEnter() {
// the root left menu should be disabled on the tutorial page
this.menu.enable(true);
}
here still I am not able to see the menu.

Is there anything I am missic here

2

<ion-navbar> controls if the back button should be shown or not. The tabs page does not include the <ion-navbar> in the template hence the back button is not shown.
Tabs by default in ionic are designed to be parent containers, so you wont have back button in any tabs page.

Regards.