The Basics
from: http://en.flossmanuals.net/Write/Starting
As is the case with most Activities, Write can be launched in multiple ways:
From the Journal you can open an existing Write document by clicking its icon.
You can also join a shared Write session by accepting an invitation from someone else. To do this you must accept the invitation from the top of the Frame (or upper-left corner of the screen).
Invitations appear in the upper-left corner of the screen in all views.
If Write is shared in the Neighborhood View, you can join the shared session by clicking the Write icon.