I think he means these:
There is a tool which is useful, particularly if the cable size is close to maximum for the size of marker, which consists of a tube which tapers to a point - the cable fits into the open tube and you slide the marker over the pointed end and onto the cable.
You can also use small long nose pliers but the tool is much better. I once used the business end of an old ball pen very successfully.
Selection of coloured heatshrink bands using the resistor colour code.
MBQ
You could do this using the self adhesive number strips too - to be sure to be sure.
Not sure how easy it would be to obtain all those colours in heatshrink.
Very easy from Rapid. All 10 colours plus clear.
MBQ
IIRC, the colour-coding is always from the end of the wire - so opposite way round at each end - as a convention, not reading 'from left to right', as that obviously is ambiguous. We had cabinets with numbers running into hundreds, so it was a tad important to get it right.
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