It'd take an hour to describe it. And then you'd have to have an understanding of option codes. The important one is the line XX7=M11, M20, N66, U21, XS6.

This means Sandman = Console, 4spd, Rally Rims, Cluster Assembly Instruments, Bucket seats.

All the boxes tell you what the car had originally fitted. Some are the last 3 digits of the part number (yes there was logic behind part numbers) and others are 2 letter codes for the components, you often see them as stickers on wiring harnesses, throttle cable, instruments etc. You can see in box 110 the letters QX which in this case should be the 140MPH/225kM/h speedo. QA in box 62 is the yello or black painted letters you see on original rocker covers (it means high comp 253) BLK means black, STD means whatever is STD for the car. - means it doesn't have any eg box 32 for armrests. There are many others like RUB for rubber floor covering etc.