2 invocations of hook_node_info()

node_type_reset in modules/node/content_types.inc: Resets relevant fields of a module-defined node type to their default values.
_node_types_build in modules/node/node.module: Builds and returns the list of available node types.

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.