The provisions in a trust document defining what the trustee may and may not do.
The trust document may appoint a trust protector and set out their powers. The trust protector specific duties will be as assigned in the trust document, but they are generally to direct the trustees in their administration of the trust, and ensuring the purpose of the trust is fulfilled.
Under a trust, the situation that occurs when the sole trustee and the sole beneficiary are the same person or institution. Then, there's no longer the separation between the trustee's legal ownership of trust property from the beneficiary's interest. The trust "merges" and ceases to exist.
The principal, or corpus, of a trust.
The most common instrument of financing real estate purchases in California and some other states (most states use mortgages). The trust deed transfers the title to the property to a trustee -- often a title company -- who holds it as security for a loan. When the loan is paid off, the title is transferred (reconveyed) to the borrower. The trustee will not become involved in the arrangement unless the borrower defaults on the loan. At that point, the trustee can generally sell the property in a nonjudicial foreclosure and pay the lender from the proceeds.