(CP) - Health Canada is set to release a user's manual this week for a drug it has long opposed: marijuana. The unprecedented move has been triggered by the courts, which compelled Health Canada this month to begin distributing government-certified marijuana to a group of patients who take the substance to alleviate symptoms. The department must also release a manual on how to use its dope - but a daft version of the document shows patients will get little practical advice about ingesting marijuana and lots of warnings against using it at all. "Administration by smoking is not recommended," says...