This is a little extended idea from the "HTML anchor link".

1) View : User-defined part of the sheet. Besides the name of this area I can imagine 2 kinds of other parameters:
a) (top-left + top-right defines the position and width of the rectangle, the height of the rectangle depends on the display of the device),
b) (top-left + bottom-right, the width and height are chosen to show the entire rectangle).
Choose one ( maybe two? )

2) JumpToView : Link to this View, can be putted anywhere on the sheet, once or many times.

This feature enables immediate switching between parts.