Underwriter
A securities broker or dealer that purchases bonds from an issuer and resells them to investors.
The amount, if any, required to be paid to the Issuer by the Underwriter at the time the Bonds are sold, which serves as the amount retained by the Issuer as compensation for any damages caused to the Issuer by the Underwriter failing to purchase the Bonds at the Closing.
A securities broker or dealer that purchases bonds from an issuer and resells them to investors.

Number of years to the point at which half of the principal of the bond will have been retired, which in turn gives an indication as to how fast the principal is expected to amortize.