Track

If you need to place a lot of blocks you can click numerous times. You can place blocks around linear entities with the 'Track' command however. With the width you can specify how far from the linear entity the blocks can be placed. The distance allows you to set a minimum distance between the blocks. No block that is placed with the command will be closer to another than that distance. For every linear entity the command will take the length and will place an amount of blocks based on the ratio. The higher the ratio, the more blocks the command will place. By default the command will place blocks on both sides of the linear entity but you can select either side. All blocks placed around an linear entity will be grouped and aligned to that linear entity.