It's pretty common to go back and forth between a screen and the flow it lives in. Once your flow is set up, anyone viewing it can double-click on any of the screens to get more details—such as comments and specs.
If a screen has connections to other screens in a flow, the connector indicators will appear on the left or right side of the canvas (based on their direction) while you're viewing the screen.
When you hover over a connector indicator, you'll see a pop-up showing the name and the thumbnail of the connected screen. Labels you add to connectors also show up here, making it easier for your teammates to choose which path to follow.