Two galleries in the show - both posted with notices advising parental discretion - are devoted to Ashby's whirligigs and to Darger's collage-paintings of imperiled prepubescent girls.

As Clair George recalled, a 'burn notice' had been issued, advising members of the agency to have no truck with him.

A notice advising 'parental guidance' before viewing the work of Dash Snow and Gerald Davis was posted by the Royal Academy, on a wall outside the room in which the controversial works were hung.

In its catalogues Sotheby's also now highlights a notice advising when guaranteed property is included in a sale.

As of January 31, 2012, most private sector employers are required to post a notice advising employees of their rights under the National Labor Relations Act (NLRA).

The Labor Department issued a notice advising workers how retiree health benefits could be cut, so employees could challenge such cutbacks or plan for the possibility.

In one instance, investigators even obtained a written notice advising an applicant to "bring a translator" to an application interview at one of the city's offices in Bushwick, Brooklyn.

Then there is a notice advising that blood-letting sessions can be arranged.

A formal notice advising commercial shippers of the naval action has now been issued, a Pentagon spokesman said.

Staffordshire police authority added: "We can confirm that a serving chief officer has been served with a notice advising them that their conduct is subject to investigation.