Unit names vary from language to language, while the SI unit symbols do not. For example in the US, m is meter but is metre in other English speaking countries and in the official SI brochure:
https://www.bipm.org/en/publications/si-brochure
And of course longer unit names do not really add anything in most cases, "meter / second" is not really any clearer than "m/s". If a longer string is needed for presentation purposes, it can be put in the description.
See this related issue in stationxml documentation: https://github.com/FDSN/StationXML/pull/76#pullrequestreview-728230815
Unit names vary from language to language, while the SI unit symbols do not. For example in the US, m is meter but is metre in other English speaking countries and in the official SI brochure: https://www.bipm.org/en/publications/si-brochure
And of course longer unit names do not really add anything in most cases, "meter / second" is not really any clearer than "m/s". If a longer string is needed for presentation purposes, it can be put in the description.
Propose adding to wiki https://github.com/iris-edu/stationxml-validator/wiki/Unit-name-overview-for-IRIS-StationXML-validator
Related first rule, in SI "m/s" is a unit "symbol" not an abbreviation. So
Maybe add the SI brochure link to bottom of page too.