Below are the equivalent of “Page Up” and “Page Down” shortcut key. Also few more options.
1. FN+(Arrow up/down) = Page up / down
2. FN+(Arrow left/right) = go to top or bottom of a page
3. COMMAND+(Arrow up/down) = go to top or bottom of a page
4. COMMAND+(Arrow left/right) = go to beginning/end of a line
It is equivalent of “END” key
control+e = go to end of the line
It is equivalent of “HOME” key
control+a = go to home of the line