ally provide hints and the Qtilities::Core::Observer::useDisplayHints() function must be called on the observer after it is constructed and before any subjects are attached to it. Qtilities::CoreGui::TreeNode on the other hand calls this function in its constructor.

The hints are interpreted when the observer widget is initialized, thus they must be set before the initialization function call on the observer widget. The rest of this section will explore the different hints.

\subsection action_hints Overvi