/*! @page help Using Online Help
You can use this online help in various ways: either sequentially from beginning to end or just by quickly locating the interesting topic.
![Online Help Features](help_using.png) @section help_seq Reading Online Help Sequentially You can move from topic to topic by means of the Next: link at the bottom of each page. @section help_random Quickly Locating a Topic of Interest You can use the following elements: - the @ref help_tree_view "Tree View" pane on the left-hand side of the browser; - the **Table of Contents** box in the top-right corner of the page; - the **Search** box in the upper-right corner of the browser window @section help_tree_view Using the Tree View The *Tree View* pane on the left-hand side of the browser displays the hierarchical Table of Contents, which can be either **linked-to** or **unlinked-from** the *Current Topic* displayed on the right-hand side. You can toggle between the two modes by pressing the **Link/Unlink Current Topic** icon at the top of the *Tree View* pane. When the *Tree View* is **linked** to the Current Topic, the *Tree View* will always follow the currently viewed topic, by expanding and highlighting the pertinent section of the hierarchical Table of Contents. When the *Tree View* is **unlinked** from the Current Topic, the *Tree View* will show only the explicitly selected section of the hierarchical Table of Contents and will **not** follow the topics activated by internal documentation links. */