Why are there two 'next page' buttons, for example, and why is there a 'Home' button and a 'Menu' button?

比如为什么有两个“下一页”按钮，为什么又有“Home”按钮又有“菜单”按钮？

youdao

When this is complete, navigate to the 'BOOTLOADER' and then 'RECOVERY' option on the menu, using the volume buttons to move and the power button to select.

当这完成后，导航到' BOOTLOADER的'，然后'回收'菜单上的选项，使用音量按钮来移动和电源按钮来选择。

youdao

Head-on, the Note 8.0 looks just like any other high-end Galaxy device: capacitive buttons for menu and back hug the physical home button below the display, while the company's logo, a front-facing camera and sensor reside up top.

ENGADGET: Samsung Galaxy Note 8.0 review

The handset's got a fairly nice bezel, with the front-facing camera on the top and a home button on the bottom, flanked by illuminating back and menu touch buttons.

ENGADGET: LG Optimus L9 hands-on (video) Mobile

That 0.1 numbering gives a good indication of just how light the visible feature set might be, though -- other than an existing update to substitute the virtual menu button for a long-press of the home key, the interface changes are mostly limited to dedicated buttons for switching browser tabs and between different cameras.

ENGADGET: HTC Sense 4.1 reportedly leaked with custom ROM, One X owners taste the future