Workflow Help
Most tools on the ribbon include text prompts beneath the tool or guide bar that explain what to do next. These prompts are a form of user assistance called workflow help.
When you select a tool, a one-line instruction is shown beneath the tool or guide bar. It explains what to click next in the modeling window to complete the workflow.
- 
                Click the 
 icon to expand the workflow help, which provides
                    additional hints and keyboard shortcuts.
                 - 
                Click the 
 icon if it is available to view an image or watch a
                    short video.
             - Press F1 to show the full online help.