How to make a permalink
Three buttons are displayed at the top right of your editor screen. You can use the 
button to request a window which can be used for creating a permalink URL.
Next, click the copy symbol - with the Include layers settings unchecked - to copy the permalink URL to the clipboard.
It contains latitude, longitude, zoom level, and optionally a junction or a place or one or more segments.
The permalink is now ready to use in Slack and also in the address bar of your own editor.
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).