Happy New Year everyone. I'd like point to a new FrontEnd feature, that I think is very useful. Consider this code `NDSolveValue[{Laplacian[u[x, y], {x, y}] == 1},
u[x, y], {x, y} \[Element] Disk[]]` that returns three messages. At the end of the first two messages you will see a blue circle-i. That circle-i is only present **iff** there is a message reference page. So if you run into trouble and get messages, you can click on that circle-i and it will take you to the message reference page. There you should find information on how to fix the issue at hand. I hope other find this useful too.
u[x, y], {x, y} \[Element] Disk[]]` that returns three messages. At the end of the first two messages you will see a blue circle-i. That circle-i is only present **iff** there is a message reference page. So if you run into trouble and get messages, you can click on that circle-i and it will take you to the message reference page. There you should find information on how to fix the issue at hand. I hope other find this useful too.