http://codex.wordpress.org/User:MichaelH/Testing/Revisions
http://codex.wordpress.org/Revision_Management
http://pubmedia.us/word/2010/03/wp-revs/
http://codex.wordpress.org/Post_Types#Revisions
Revisions
A “revision” is used to hold draft posts as well as any past revisions of existing posts or pages. These are basically identical to the main post/page that they are for, but have that post/page as their parent.
http://codex.wordpress.org/Editing_wp-config.php#Post_Revisions
register_post-type()
post type is a native or “built-in” post_type
this is a built-in native post type (post, page, attachment, revision, nav_menu_item)
wp-includes/post.php
add_post_type_support()
OPTIMIZE TABLE wp_posts;
http://codex.wordpress.org/Function_Reference/wp_text_diff
wp_get_post_revisions()
wp_delete_post_revision()
$return[‘post_name’] = $autosave ? “$post[ID]-autosave” : “$post[ID]-revision”;
define( ‘AUTOSAVE_INTERVAL’, 120 );
http://wordpress.org/extend/plugins/skip-identical-revisions/