126.96.36.199.3 Bindable Servers
A bindable server provides the same functionality as a connectable server (see section 188.8.131.52.2) and MUST have one or more properties declared with the [bindable] attribute (see section 184.108.40.206.2).
The client MUST receive notifications that the value of the associated property has changed.
The client MUST specify whether it provides the functionality to determine whether a property value can be changed. If it does provide this functionality, it either grants or denies permission to change the value of the property upon request.
When the value of a bindable property is changed, the server notifies each registered client that the value of the property was changed.