The bid would express a requested quantity and a limit price, which would illustrate the aggregated demand. Generally, if an investment banker observes the demand trend and combines them all into the consideration, the final offer price will be adjusted upward or downward to stand at the most appropriate point. Consequently, the issue price would reflect the expectation of investors. Bookbuilding procedure in someway resembles an auction like, but there are some important differences. The most important difference is that the pricing and allocation rules are not announced, but are left to the discretion of the investment banker. Another difference is that investors' bids do not represent a commitment, but merely an indication of interest. Following the bookbuilding process, the investment banker uses the information to construct a demand curve. The issue price is not set according to any explicit rule, but rather based on the banker's interpretation of investors' indications of interest. However, as an underwriter, they generally set the price at a level at which the demand exceeds supply, and then allocates shares to the bidders at his discretion.