* will contain an array with a single message key, which can be one of
* "revdelete-restricted", "revdelete-unrestricted" indicating (un)suppression
* or null to indicate nothing in particular.
- * You can turn the keys in 0 and 1 into message keys by appendin -hid and
- * and -unhid to they keys respectively.
+ * You can turn the keys in $arr[0] and $arr[1] into message keys by
+ * appending -hid and and -unhid to the keys respectively.
*
* @param $n Integer: the new bitfield.
* @param $o Integer: the old bitfield.