# Recommendation S.4 (11/1988): Special use of certain characters of the International Telegraph Alphabet No. 2

> superseded recommendation/international standard from the International Telecommunication Union

**Wikidata**: [Q26985447](https://www.wikidata.org/wiki/Q26985447)  
**Source**: https://4ort.xyz/entity/recommendation-s-4-11-1988-special-use-of-certain-characters-of-the-international-telegraph-alphabet-no-2