It was originally an
imperative for directing attention to speakers, and has since been used, according to the
Oxford English Dictionary, as "the regular form of cheering in the
House of Commons", with many purposes, depending on the
intonation of its user. Its use in Parliament is linked to the fact that
applause is normally (though not always) forbidden in the chambers of the House of Commons and
House of Lords. It is also used in other parliaments established in the Westminster tradition, such as Australia and Canada. == See also ==