Brevity is the soul of wit. In essence, make anything the comes from your whelpling fingers be succinct, and that you don't overstay your welcome. Writing for too long can...
Adding a Ban IP: Can be a single IP (eg. 123.234.210.21), or a CIDR block (eg. 152.23.43.0/24)
Reason: Any text, for the admin to remember why the ban was put in place
Until: Either a date in YYYY-MM-DD format, or an offset like "3 days"