Help (?) menu

Online help is displayed in your preferred HTML browser, which you can set in the Preferences.

Help(?) menu command | Description
Tool help | Opens the Online Reference at the description of the current tool
Context help | Changes the cursor to context help mode. Clicking into a specific context then opens the Online Reference at the description of the selected context.
Quick Ref | This command is available in all tools where icons and typeface provide graphical feedback. The Online Reference is opened at a summary of these elements as they apply to the current tool.