ProxyLocal is a modifier that is placed before the method keyword on method signatures. When used, it marks the method as executable on a proxied node. The other choice when a method is called on a proxied node is proxyForward.
For uses such as Seamless world, nodes have a temporary copy, or proxy, replicated in other area server processes. The proxied node is a copy of the "source" node, which is the real node that is being replicated.
When a proxied node is established, the only methods that can be run on it are those which have the proxyLocal or proxyForward modifiers. Attempts to run any other method from the destination process, will generate a script error.
The ProxyLocal modifier on a method, means that it will be run by the destination process, and not require any input from the source area server.