8.9 Quick Documentation Lookup
Context sensitive Kotlin and Android documentation can be accessed by placing the cursor over the declaration for which documentation is required and pressing the Ctrl-Q keyboard shortcut (Ctrl-J on macOS). This will display a popup containing the relevant reference documentation for the item. Figure 8-18, for example, shows the documentation for the Android Snackbar class.
Figure 8-18
Once displayed, the documentation popup can be moved around the screen as needed.