Touchsigns gives your plugin the ability to tell which part of a wall sign that a player clicked on. It makes a touchscreen out of any sign!
This plugin does not do anything by itself! It may be a dependancy of other plugins, and can be used by developers of other plugins.
Basically, when a player clicks on a sign, this plugin calculates the line-plane intersection of the sign and the player's line of sight, and then feeds that information into any other plugins that ask for it.
There are no commands or permissions in this plugin.