With this system the surveyor gets many bonus facilities such as being able to set out points both in 2 or 3 dimensions as well as offset points e.g. road staking.
Lists of coordinates need not be stored as any graphical object automatically has coordinates for any desired point.
It is therefore, for example, easy to graphically identify the lift shaft on the 3rd floor of a building and set this out directly.
Points set out can also be observed and recorded.