ISO/CD 105-C12 ("Textiles - Tests for colour fastness — Part C12: Colour fastness to industrial laundering")
has an alphabetical part
ISO/IEC CD 29110-5-1-1 ("Software engineering — Lifecycle profiles for Very Small Entities (VSEs) — Part 5-1-1: Management and engineering guide: Generic profile group: Entry profile"), ISO/IEC CD 29110-5-1-2 ...
Notice that these are "Part" numbers not Subparts, because in ISO there are no Subparts
ISO/PRF TR 31700-2
I think we do support?? Or do we support "ISO/TR PRF"?
IEC/DPAS 63086-3-1 ("Household and similar electrical air cleaning appliances — Methods for measuring the performance — Part 3-1: Particular requirements for reduction of microorganisms")
I think we do support but this is IEC but also published at ISO, and this has a subpart because it is IEC.
In the latest ISO standards update I noticed that there are some identifiers we probably don't handle: https://www.iso.org/files/live/sites/isoorg/files/news/magazine/ISOupdate/EN/2023/ISOupdate%20January%202023.pdf