node

Finding a module
drupal node info block
site:drupal.org node information block module
http://drupal.org/project/about_this_node

if not displayed

creation date and time

creation author (user who created the node)

And also:

promoted to front page status

sticky status

node ID (NID)

published status

commenting status (enabled, read only, or disabled)

should theoretically be visible

The nodeapi ops were turned into hook_node_[operation] functions, such as:

No answer:
How Can I Search Unpublished Content?
http://drupal.org/node/300803

Romania had a similar issue:
Can't access unpublished content that needs editing
http://drupal.ro/node/2394

Motivation for this function: sure, we could use a plain node_load($nid) and wrap every $node->field['0']['value'] in a check_plain or the function for rendering with the proper input format (check_plain). The proper format is available to be grabbed from the data provided by a regular node_load. But that's a lot of work and not the way we're used to theming things in .tpl.php