I'm a computer programmer and use Xcode so I am constantly scrolling up and down. Often times I would like to move the page down but not as much as the "Page Down" keyboard key moves it. I would like to move it half the distance as it usual moves. I feel like I have experimented with every combination of "Page Down" with shift, option, control, command, and fn. Also, I used all those controls with the down arrow keys with no success.
Maybe I missed something? Is this even possible? I use a program called Dragon Dictation that accepts AppleScript so if somebody knows how to code this so I can use it in Dragon Dictation it would be very helpful.