Add 1 undocumented rule to the ToU

[Aunstic]

Any and all unspoken rules should be formally amended into the Terms of Service. I can only think of one, but I would like to see if other players have encountered a warning or infraction by any other unspoken rules so the staff can add them to the Terms of Service thread

ToU: https://forum.nostalrius.org/viewtopic.php?f=2&t=8

http://forum.nostalrius.org/viewtopic.php?f=6&t=5598&start=30#p48502

<GM> Witcher on "Casting through structures is prohibited in spells; mainly affecting Area of Effect spells, but not limited to this spell type."