> You can use "will" to create a promise--a contractual obligation. See Bryan A. Garner, A Dictionary of Modern Legal Usage 941-942 (2d ed., Oxford U. Press 1995). When used in this way, "will" is not merely stating a future event, it is creating a promise to perform:
> > Landlord will clean and maintain all common areas.
> In most basic contracts, I recommend using "will" to create obligations, as long as you are careful to be sure any given usage can't be read as merely describing future events. I'm generally against "shall" because it is harder to use correctly and it is archaic.
https://law.utexas.edu/faculty/wschiess/legalwriting/2005/05...
