Assign to t the value of the string s, with all letters mapped to their upper case.
let t = s.toUpperCase();
import "strings"
t := strings.ToUpper(s)
local t = string.upper(s)
t := UpperCase(s);
$t = uc $s;
t = s.upper()
t = s.upcase
let t = s.to_uppercase();
No security, no password. Other people might choose the same nickname.