What is contempt of parliament?

Canadians will be heading to the polls for a Federal Election on May 2, 2011. A sub-committee made up of members from the three opposition parties ruled that Stephen Harper's Conservative government was in contempt of Parliament on March 21, 2011. Harper's government was found to be in contempt of Parliament for refusing to reveal the cost of new F-35 fighter planes and failing to disclose the cost of some of its crime bills. On March 25, 2011, Liberal Leader Michael Ignatieff introduced a motion of non-confidence. The NDP and BQ supported the Liberals, making Prime Minister Stephen Harper’s government the first to fall on a charge of contempt of Parliament. But what is "contempt of Parliament?" According to House of Commons Procedure and Practice, the House claims the right to punish, as a contempt, any action which, though not a breach of a specific privilege does one of the following: 1) tends to obstruct or impede the House in the performance of its functions; 2) obstructs or impedes any Member or Officer of the House in the discharge of their duties; 3) is an offence against the authority or dignity of the House, such as disobedience of its legitimate commands or libels upon itself, its Members, or its Officers.