Wiremarking for Industrial Local Control Cubicles

In our control cubicles we use clips as marking on the wires.
Is there any recomendation acc. IEC in which sequence the text should be readable (left to right / top to button)-> -XD1: 12
Can somebody tell me where it is written?

Not sure if IEC stipulates this, but for me the usual text directions on a technical drawing are left to right, or top to botom (tilting head right)

There are several methods of marking control wire conductors, I have never seen an stipulated order, I always use NFPA79 as a guide and do not recall seeing anything on it.
Max.

I remember seeing a recommendation in one standard that the number reads "away" from the terminal.

However that means fitting the markers to each wire in reverse order when using push-on types & that seems more likely to introduce errors.

We always fit them in natural reading order as they are threaded on the wires..