With 'Relative Divide Rhythmic' you can create a rhythm in the blocks you place on linear elements. You can create a rhythm in the scale of the blocks and/or the block type. For the scale you can define a list of values. Every time the command will place a block the command will use the next value in the list you defined. So if you defined scales 1.0 2.0 and 3.0 the blocks that are placed are scaled 1.0 2.0 3.0 1.0 2.0 3.0 1.0 and so on. If you want to have a rhythm in the block type you will have to select the blocks in the order you want to have them placed before the command will place the blocks. The amount of blocks isn't determined with an amount of segments. The amount of blocks is determined by a distance. You can determine if that distance should be considered as a minimum or maximum. By default the command uses this distance as a minimum. Which means the command will place as much blocks as possible with respect of the minimum distance, so the blocks are never closer to each other than the minimum distance. If you enable the on ends option the command will place a block on the start and end of the linear entity.