Features Help is available for all components. Open it by selecting a component on any tab, for example the Repository tab, and pressing F2. Or select Features from the context menu.
What is shown on the Features tab varies depending on the type of component.
In the Source editor, select the component name and use the context menu or press F2 to open the Features tab:
Alternatively, select the component name in the source and use the context menu to open the Features tab.
On the Features tab expand Events, Properties or Methods to view them in detail. Expand a method to see its parameters. Double click for example a method to display detailed Feature help in the browser: