The `iframe_footer()` function generates a generic iFrame footer for use with Thickbox, which can be used to display various types of content such as images, videos, or custom HTML
The `iframe_header()` is a WordPress function that generates a generic iframe header for use with Thickbox, allowing you to create custom headers with titles and parameters
The `human_time_diff()` function in WordPress calculates the difference between two timestamps and returns it in a human-readable format like “1 hour” or “5 minutes