How to make a permalink
The permalink icon 
at the right bottom of your screen has two functions:
- refresh the browser window, and
- to create Permalinks to share and communicate with other editors.
A permalink is a URL used to take you or someone else directly to a specific map location. It contains latitude, longitude, zoom level, visible layers, and optionally a junction or a place or one or more segments.
To refresh the browser and "remember" the current editing window information, simply click on the permalink icon. Any unsaved edits will be lost, and the chat window will be cleared. The current map permalink will be copied to the address bar, and may be copied for sharing with other editors.
To create a permalink without refreshing the browser, zoom and pan the map to show what you want to show. Next, hover the mouse over the permalink icon on the right side of the bottom bar until a message pops up. Then use Ctrl+C to copy the permalink. You can paste this link anywhere you need it.
To include a single place, junction, or segment in the permalink, click on it before using the permalink icon. To include several segments and/or objects, use ctrl+click (for MAC:⌘ Command+click).