Using SHIFT/CTRL + Scroll/arrow key lets you quickly and precisely resize the Section Box
No more trying to find the correct allow to pull and guessing where to release it.
Holding down SHIFT before you move from one 2D view to another will automatically zoom to the same plase and same zoom factor.
This way is much faster than scrolling!
Holding down SHIFT before you move from a 2D view a 3D view will set the Section Box = to the level from witch you came
This way is much faster than the manual way!
Measure the distance, select viewport to move and select the direction
Clean up the model in a fraction of the time it would normally take