When you access the application, the ribbon displays across the top of the main window, providing access to a variety of tools and commands.
The ribbon is organized into tabs, labeled by task. Each tab contains a list of commands organized in a series of panels.
Ribbon References
The help topics contain several references to commands from the ribbon. These references consist of the tab name, followed by the panel name, followed by the command name.
For example, here is a reference to the Simulate command which is located in the Solve panel of the Simulation tab:
Simulation 
Solve Simulate.
Tooltips
Tooltips display when you hover over a command in the ribbon. They display the name of the command as well as a short description. If you continue to pause over a command, the tooltip expands to reveal additional information.