"Investment banks" create loan agreements that cater to the needs of the investors whose funds they attempt to attract; "investors" are always sophisticated and accredited organizations not subject to bank regulatory supervision and the need to cater to the public trust. Investment banking activities are supervised by the SEC and their main focus is on whether the correct or proper disclosures are made to the parties who provide the funds.
In certain cases where you have repaid some installments of a previous student loan independently, you would be given the authority of branching away the Co-borrower. This is known as Co-Borrower Release and by doing so, you ensure that the loan repayment is entirely yours. This also puts you in a position where you are not hit by the Credit History of your Co-Borrower. Both of you are separate entities speaking from the loan perspective and you would hence need to take charge of repaying your loan off.
The final fourth sections contains standard text including details such as contract information, the relationships that exist between the finance parties - in the event of more than one tender and more than one law that apply to the agreement.
If you are planning to build your own home, the entire process can be extremely overwhelming. There are very few projects you or anyone else can take on that are more stressful and more prone to problems. One of the most dizzying aspects of building your own home is having a grasp on all of the legal agreements and contracts that you will need to enter into to get the job done.