Also, many offer letters request you sign 1 or more documents citing that you are signing on to at-will employment, etc., etc. Often times these offer letters

Also, many offer letters request you sign 1 or more documents citing that you are signing on to at-will employment, etc., etc. Often times these offer letters also cite a stock option plan that you are not yet given - that you will receive at some point in the future (probably within a month or so) that includes the actual terms of your options.