help please with technical info

[mark christopher]

Righty, got me one of these
(Posted here as the pred has same suspnsion as the help i need info on)



and want some info
i need to know what the linkages do as, if i adjust the spring collar i adjust ride height, if i adjust the linkage from the wishbone to the shock pivot i adjust droop and ride height?

linkage from arm to silver 90 deg rocker arm in pic below



advise help or info greatly apreciated.