Any direction given under this Act shall be in writing.
Any power conferred by this Act to give a direction shall include power to vary or revoke the direction.
Subsections (4) and (5) apply to any direction which is—
A direction to which this subsection applies shall not be varied or revoked unless, notwithstanding the variation or revocation, any relevant assimilated obligation continues to be met, whether by directions or any other instrument or by any enactment.
Any variation or revocation of a direction to which this subsection applies shall be published in such manner as the Minister giving it considers appropriate for the purpose of bringing the matters to which it relates to the attention of persons likely to be affected by them; and—
In this section, "enactment" includes an enactment comprised in, or in an instrument made under, an Act of the Scottish Parliament.