Bukkit

What is the issue?
How to select air blocks
Please provide any additional information below.
You said that you can now select air blocks? How do you do this? When I right click on air, nothing happens. Lol. Yes, I'm a noob.

Use the "bone" tool (whatever is listed as boneItem in your config.properties file) on a block. This will detect the block immediately one space away from the face that you click on. Example: To check if a block above, say, a brick has been changed, right click with your bone item on the top face of the brick block. If the block of air immediately above the brick block has been modified, it will tell you. The same can be done for any other direction; simply right click the different faces of the brick block, and if the adjacent air block has been changed, you will be notified.