47_99 accessibility 99. Eur. Court H.R., Olsson judgment 24 March 1988, Series A no. 130).While the power to regulate the use of the Square for assemblies is not subject to defined restrictions, the Commission notes that the policy of excepting demonstrations relating to Northern Ireland was the subject of a public statement in the House of Commons and that numerous refusals of demonstrations occurred subsequent to this. It is compatible with the requirements of foreseeability that terms which are on their face general and unlimited are explained by executive or administrative statements, since it is the provision of sufficiently precise guidance to individuals to regulate their conduct rather than the source of that guidance which is of relevance (See eg. Eur. Court