Работа по SEO №1 - полное описание со всем материалом.

While FW Gallery is fully seld-sufficient solution, add-ons may add features your website needs. The main plugin has a functionality that is critical for it to work. All other features come as add-ons to allow customers decide which configuration they prefer on their website. Add-on is the simplest way to add new features and design to FW Gallery.