[Fast Ed97]

the instruction did not ban liturgical dance; it did not mention dance at all.

How Unfortunate!

[lrslattery]

the instruction did not ban liturgical dance; it did not mention dance at all.

I believe this will cover 'dancing girls' around the altar.

[79.] Finally, it is strictly to be considered an abuse to introduce into the celebration of Holy Mass elements that are contrary to the prescriptions of the liturgical books and taken from the rites of other religions.

The 'prescriptions' are those things enumerated in the liturgical books. Dancing is not given as an option in any 'prescriptions'. To introduce it into the Mass would be contrary to the 'prescriptions'. Essentially, nothing may be introduced into the Mass that is not allowed in the GIRM or other authoritative documents.