      An order represents intent to buy or sell. Market orders requestexecution at the most advantageous price attainable after the order isrepresented in the "trading crowd." Limit orders request execution at aspecified price or better; they will be filled only if that price isreached. In addition to these basic types of orders, there are severalorder types specifying further conditions for execution (sell plus, buyminus, good 'til canceled, stop orders, and market on close orders). Orderscan also be divided into member orders (for the member's own account) orpublic orders (submitted by a member firm on behalf of a non-member such asa retail client).