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Entering data from direct visual inspection

One of the greatest virtues of Green Book is that you don't need to know much about the circuit you are documenting. You can start connecting wires to devices in no particular order and the system will build the circuit for you sooner or later.

For example, you can go to rack RK-T28 (the physical one) and make and inventory of all frames located there as well as all the cards placed into those frames. Then you turn to Green Book and place frame devices in location "RK-T28", and card devices into the corresponding slots.

If a certain device does not exist in the Library, you simply create it (possibly from the manual or datasheet) at that moment.

At a later time you can get back to the physical rack and take note of all wires connected to those cards. Then, start documenting that in Green Book in no particular order.

Green Book will reflect the interconnection between devices that happen to be interconnected by the wires you entered when both ends gets "connected" in Green Book. You don't have to enter both ends in a single session; you can enter one end today and the other, next month.

This method may prove an effective way for entering data into Green Book.