Question about structured bonds

[goose10]

Hi all. I do not have a good handle on bonds, but have a couple of IFT issues that I'll hold to maturity. Looking through the options on nzdx there are a mix of types, but I do not understand how the "structured" bonds of FBI work. Have had a quick look online and this definition seems broad. I also could not find the documents relating to those specific bonds on Fletcher's website (I will email their IR though). Does anyone have experience with any of these bonds and can explain how they work?

[Red Baron]

FBI230 bonds are FBI180 bonds rolled over.
https://www.nzx.com/announcements/425382

Terms vixed vor vive years.   Rates to be reset 15-03-2029

RB