I've found this class very useful and flexible for theme development. But I need a more advanced field that saves the id of an attachment-image for use like homepage slideshow. So it must be also repeatable. I'd like also having a link field to a specific post or page or archive that connects to the other for clickable slideshow.
It's a PHP class wrapper for handling WordPress Settings API. Gives a very handy way to build theme or plugins option panel.
A nice tutorial is presented can be found here about how to use this PHP class
It's mainly a plugin that demonstrates the Settings API PHP class
A plugin or theme developer can build their options panel with Settings API easily
Settings API is a functionality from WordPress that helps developers to save their options data very easily and securely. More about Settings API.