Acorn computers invariably came with white mains cables and moulded plugs on them. They usually came with a yellow warning label stuck to the cable which has usually been lost over the years but has left its mark behind all over the mains cable.
The cable can be cleaned and restored to its former glory quite easily by using scent free baby wipes to soften and eventually remove the dirt and remaining soft glue residue from the sticky warning label that once adorned the cable. After around 15 minutes of work, the cable should look like new as shown in the photo below.
RISC OS is the operating system that runs on all Archimedes and RISC PC's from Arthur in the beginning, to RISC OS 2 and onwards to RISC OS 4, 5 and 6 today.
provided courtesy of The IconBar