4 There is a tendency, perhaps more pronounced these days than in earlier times, to include in pleadings what might be called "background facts". Often, this is done not because the person drafting the pleading is unaware of the provisions of O 20 r 8, but because such background facts are seen as of assistance in making sense of the pleaded material facts. Strictly speaking, such background facts are irrelevant, offend the rules of proper pleading and would be liable to be struck out. Frequently, counsel faced with such a pleading and cognisant of the right to apply to strike out, simply allow the matter to pass because the background facts are not disputed and their presence in a pleading will not cause embarrassment, nor will it delay the trial of the action. But the fact remains that such background facts ought not be pleaded. It is contrary to good pleading practice. Whatever may be the limitations of a system of civil litigation that defines the issues between the parties by reference to pleadings, while such a system is in use its rules, where possible, should be observed.