Added to LibreOffice 4.0 for the first time, sidebar became a popular part of its UI. providing access to more and more functionality with every release. This talk (or better, tutorial) will enable new as well as experienced developer to dive deep into anatomy (structure) as well as physiology (function) of sidebar and its decks and panels. At the end, you should be able to create your first panel, either in LibreOffice core or as an extension.