Packing animals with Shields

From help pack

PACK                                                            (Equipment)

  This command allows your character to pack supplies, goods, armaments,
and so on, upon a beast of burden, relieving him/her of the weight and
bulk. When used without an argument, it will show you what has been packed
upon the mount.

Syntax:
  pack <item> <animal - optional>

Examples:
  > pack

  > pack shield

  > pack bag kank

Notes:
  Your character must be mounted for this command to work.

  Only certain types of containers can be packed; in other words, you
  cannot pack a sword onto a mount's back, unless it is in a backpack,
  bag, or some other container. Generally speaking, you cannot pack
  water containers (e.g., waterskins) onto mounts.

See also:
  mount, unpack

From a game experience:

pack shield>
You can only pack a mount with containers.

was just wondering if the shield part was going to be implemented or if the helpfile could be changed.