Unfortunately for Tom Johnson, after three years of trying to grow any form of facial hair, he has been resigned to use the dreaded marker pen as a substitute.

BBC: Clive Stuart-Smith column

Different materials were handled roughly, placed in water, burnt, scoured with an abrasive cleaning pad and covered in black marker pen, but the laser was still able to read the surface fingerprint.

BBC: NEWS | Technology | Laser spots paper 'fingerprints'

Their black marker pen censored three per cent of the report for "legal reasons".

BBC: Savile inquiry: Media reaction to BBC transcripts

The first group had their plumage colour enhanced with a marker pen.

ECONOMIST: Male birds cannot afford to relax their standards