Method: Render the settings page for this plugin.

Method: Highlight the proper top level menu.

Method: Get free unused menu position. This function helps prevent other plugin menu conflict when assigned to same position.

Action Hook: Action hook for adding custom menu in wp-admin.

Method: Register the administration menu for this plugin into the WordPress Dashboard menu.

Method: Menu counter

Method: Register and enqueue admin-specific JavaScript.

Method: Register and enqueue admin-specific style sheet.

Method: Include files required in wp-admin

Method: Initialize the plugin by loading admin scripts & styles and adding a settings page and menu.