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You can earn activity points by filling your profile with information about yourself (what city you live in, your favorite team, blogs etc.)
A red volume figure inside of the black box figure indicates a potential iceberg order, which is an order that is secretly larger than the publicly displayed volume.The black figure is the publicly displayed volume of shares that have already traded on that order. note that is impossible to know what the total desired volume is for a iceberg order.
If you have level 2 in market depth there is a good chance you will see it.