The so-called post type features are flags (boolean values) that mark if a given part/meta box in the admin/edit section will be used or not. The default features are 'title', 'editor', 'comments', 'revisions', 'trackbacks', 'author', 'excerpt', 'page-attributes', 'thumbnail' and 'custom-fields'.
Post type features
Descriptions of post type features
By the Web Warlock, Wednesday, 25/Aug/2010 21:51
Description of one of the so-called post type features.
add_post_type_support
By the Web Warlock, Wednesday, 28/Jul/2010 4:43
<?php add_post_type_support( $post_type, $feature ) ?>
excerpt post type feature
By the Web Warlock, Wednesday, 28/Jul/2010 3:51
The excerpt
post type feature indicates whether the excerpt meta box will be displayed in the edit post screen.
Adding excerpts to Pages
By the Web Warlock, Wednesday, 28/Jul/2010 3:47
To add excerpts to Pages, from 3.0 on you just need to add the support for the excerpt
feature for the page
post type with add_post_type_support called in the init
hook.