Hi there, so basically what the Flip component do is to re-organize the information contained in a Data Tree. Let´s say you have an output with three branches (0;0 , 0;1 , 0;2 ) and inside each of this branches you have five items (0,1,2,3,4). So when you flip this arrangement you switch the indices for the branches and the other way around. So what you get is a new Data Tree Structure where instead of three branches now you have five (0;0,0;1 ,0;2, 0;3,0;4) and each one of these branches instead of having five indices you'll have three(0,1,2). In this case because of the way Jaime wants to control the extrusions of the volumes he switched the way the square grid was arranged prioritizing the rows instead of the columns which is the way the component organizes information by default.