Revision Management

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()

Disable post revisions in WordPress 3.0

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/