References and Links
References help you connect the conversations you're having across all your Projects and Pings. When you add a link to a message, to-do, card, event, document, or file elsewhere in Basecamp, you'll automatically create a Reference, instantly tying related things together. You can see where else something was discussed, so you have the full context no matter where the conversation happened.
References are in a separate tab alongside comments:
NOTE: You will only see References from projects and conversations that you can access.
Copying a Link
Each Basecamp app has a different place to grab a link. We've got instructions for all of them:
Go to the Page menu in the top toolbar, then click "Copy Page Address"
Tap the ••• options menu at the top right, select "Share," and tap "Copy."
Tap the ••• options menu at the top right, select "Share," and tap "Copy."