You can hold left click to break blocks, which is said in the instructions, but I realize that it is unclear when it says "right click to use the item," which is in the line above the left click instructions. I'm not quite sure how to phase it differently though since the right click is not only used for things like placing blocks, shearing sheep, and feeding x's, but is also used for interacting with things in the environment that may be unrelated to the item being held, such as viewing x stats or opening trough inventories. Please feel free to give me some ideas about the wording on that, and I will also try to think of something. Also feel free to let me know about any other issues.