What is visible
Presence is a separate stream that does not change the document. It shows:
- who is on the board right now;
- where each person's cursor is;
- which reaction a person sent, if they sent one.
Presence is not saved: close the tab and you disappear from the list. The edit history stays.
Name and colour
A participant is represented by a name and a colour. The name can be changed in the top bar; it is stored in the browser and reused on the next sign-in. Two tabs with the same name are one participant. To test a two-person scenario, set a second name in the address: /?room=<board>&user=Ann.
Follow
Follow is a subscription to another person's camera, not to their permissions:
- you choose a participant and turn follow on;
- your camera repeats their movements and zoom;
- you can leave at any moment;
- the person being followed can stop all followers at once.
Follow does not give access: if the board is closed, you will see only what you could open anyway.
Calling everyone to you
This is an invitation, not coercion: a person receives a request, agrees — and ends up in your part of the board with follow on. A refusal changes nothing. If automatic follow is enabled on the board, the invitation does not ask — the view moves immediately.
Practical consequence
Two people can look at different parts of the board and not get in each other's way. A shared picture appears only with follow or with an explicit jump via a link to an object.
Where to go next
Collaboration — what this gives and where the limit is.