The term 'up to the point when' can be expressed in five letters as 'UNTIL'. UNTIL is a preposition that is used to indicate the time, condition, or point at which something will happen or be done. It is often used to refer to a point in time that is not yet reached, but will be reached in the future. For example, one might say 'I will work UNTIL 5 o'CLOCK' to indicate that they will work up to the point when it is 5 o'CLOCK.