1.   Trading was extraordinarily heavy, reflecting high levels of computer-driven trading activity.

2.   Trading was sluggish as aerospace, defense and oil stocks pushed prices yesterday.

3.   Although the stock exchange was closed for the day as a result of the explosion, trading was largely uninterrupted since the central computer system remained undamaged.

4.   Trading in things is the secondary consequence of trading in song.

5.   Trading is by open outcry on the exchange floor.

6.   Brought-forward trading losses can be set against balancing charges arising on the disposal of the target assets.

7.   Trading was thin with little major company news to inspire investors.

8.   Trading was tough across the board, but progress was particularly difficult to achieve in Europe as leading economies moved into recession.