Details include information as follows:
Properties that are needed by the implementation
The data types and default values of those properties
The file system path for the callback methods for the resource type implementation
Various settings for the system-defined properties
The sample RTR file that is shipped with the DSDL is sufficient for most resource type implementations. You need only edit some basic elements, such as the resource type name and the path name of the resource type callback methods. If a new property is needed to implement the resource type, you can declare it as an extension property in the RTR file of the resource type implementation, and access the new property by using the DSDL scds_get_ext_property() function.