Small shortcut arrow in Project Item icon

[MrAnalogy]

Playing around with UR (looks very good so far. I can see all the little touches that improve it).

I'm using a copy of the GTD.URD.

I see that I have a project icon and it has a small shorcut looking arrow in the lower left corner. No other project items have this, so I assume this is a link to a project hat is elewhere. But I can't find that project.


Is it a link to a project? How can I open the actual item linked to?