What happened to the arguments part of views 3? Am I just blind? 

(I'm trying to pass the current page's nid into a block where I'm theming a view and want to filter the view by the nid.)
They have been renamed "Contextual filters," and they have been moved in the third column that is collapsed by default.



In Drupal 6 (Views 6.x-3.x-dev) the URL arguments are still called "Arguments."