The WebTemplate database is a tree structure of Nodes. Each Node in the tree is of a particular type. The type determines which attributes the node will store.
For example, a node of type contact usually has the following attributes: First Name, Last Name, Email Address.
Node Types are defined through the Node Type interface in The Office under the Tools menu.
Each node in the tree has a Globally Unique Identifier (GUID). This GUID can be used to reference the node. The path to the node in the tree can also be used to reference it.