Giant displays were set up in (some places), where the projected programme was often used as a supplement to some promotion campaign or a secondary display. The programme shown can be a moving picture or an advertisement or a worded message about the ongoing promotion and categories in the shop in question.

Вопрос: It would be a serious mistake if the commissioner’s television advertisement were to appear on the digital network.

И дальше: Such a message should be able to attract attention in shops without the sound, necessitating the use of additional visual representation, captions or text bubbles.

Не понимаю, что за коммиссионер такой и почему серьезная ошибка именно ему давать свои объявления по, если я правильно понимаю, сети телевизоров или мониторов (технология, про которую рассказывают)?