Note: this list is generated by looking for the string for this theme hook, so it may include some references that are not actually using this theme hook.

node_form in core/modules/node/node.pages.inc
Form constructor for the node add/edit form.
node_menu in core/modules/node/node.module
Implements hook_menu().
node_node_type_load in core/modules/node/node.types.inc
Implements hook_node_type_load().
node_theme in core/modules/node/node.module
Implements hook_theme().
node_type_form in core/modules/node/node.types.inc
Form constructor for the node type editing form.
node_type_form_submit in core/modules/node/node.types.inc
Form submission handler for node_type_form().
node_type_set_defaults in core/modules/node/node.module
Sets the default values for a node type.
node_update_1005 in core/modules/node/node.install
Convert content types to configuration files.
node_update_1019 in core/modules/node/node.install
Update each content type with new node_preview configuration defaulted to enabled.
PagePreviewTestCase::testPagePreview in core/modules/node/tests/node.test
Checks the node preview functionality.
standard_install in core/profiles/standard/standard.install
Implements hook_install().