_admin_notice_post_locked()
Function: Outputs the HTML for the notice to say that someone else is editing or has taken over editing of this post.
Source: wp-admin/includes/post.php:1696
force_ssl_content()
Function: Determines whether to force SSL on content.
Source: wp-includes/ms-functions.php:2451
filter_SSL()
Function: Formats a URL to use https.
Source: wp-includes/ms-functions.php:2473