One old standby in particular that the Org used for for years was the expression “we do not recommend/advise you to…” (paraphrasing, but not much).
…which was overwhelmingly understood by the R&F as “we recommend/advise you not to”…
…whereas technically (in terms of grammar), it was actually a much more neutral turn of phrase, closer to “we neither recommend nor forbid you to…”
It took me years to figure that out.