Allowing end-users to sort meta box fields is pretty straight forward. These two screencasts will show you how to quickly setup sorting as well as how to setup a simple notification message to alert users to “Update” the post/page.
This release introduces two modes of operation when creating a WordPress Meta Box: Array Mode and Extract Mode. The default mode is Array and will typically work well for the majority of users. Learn how and when to use Extract mode.
Learn how to move and reposition the WordPress Visual Editor. This quick guide will show you how to essentially make the WYSIWYG Editor act like a generic meta box, allowing you to reorder it in any position you want.
Support for two key features make this WordPress meta box PHP class even more attractive. With the addition of filtering and repeating fields, you have even more flexibility when using meta boxes for your themes and plugins.
This WordPress helper will let you create Meta Boxes fast with the flexibility you need as a developer. Full documentation walks you step-by-step. Create custom WordPress Meta Box UI elements for your projects with ease.
As you begin to build custom UI elements (meta box elements) for your WordPress themes and/or plugins; you may find it useful to hide certain meta data variable names so that they do not appear in the Custom Fields area. There is no point in allowing the user to edit a piece of meta data in both your custom UI and also in the Custom Fields section (IMHO, i think it adds to the clutter and may cause confusion).