- * if (modes[modeletter-65]) is set, then the mode is
- * set, for example, to work out if mode +s is set, we check the field
- * User::modes['s'-65] != 0.
+ * if (modes[modeid]) is set, then the mode is set.
+ * For example, to work out if mode +i is set, we check the field
+ * User::modes[invisiblemode->modeid] == true.