Function: Returns a submit button, with provided text and appropriate class.

Function: Converts a screen string to a screen object.

Function: Outputs the HTML for restoring the post data from DOM storage

Function: Displays the search query.

Function: Prints out all settings sections added to a particular settings page.

Function: Prints out the settings fields for a particular settings section.

Function: Registers a settings error to be displayed to the user.

Function: Fetches settings errors registered by add_settings_error().