Optionally add vertical motion to elements in Columns/Rows/Boxes transitions. Accepts three possible formats denoting either random, cycles or direction based movement. 1) Random: {min,max} Applies a random amount of movement within a specified range. E.g, {-45,45} to slide in by an amount between -45% and 45% of the element's height. 2) Cycles: [val,val,val] Cycles through applying specified movement amounts sequentially from one element to the next, in the order determined by the 'Flow' setting. E.g. [-10,10,25] will apply a -10% motion to the first element, 10% to the next, then 25%, then the sequence repeats. 3) Direction Based: (val) e.g. (45) to add 45% motion when going to the next slide, and -45% when going to the previous slide.