On 8/31/16 7:21 AM, Eli Zaretskii wrote: > Do all true-color terminals support the same escape sequences for > 24-bit colors? Is there any standard documents we could rely upon for > hard-coding them here? Yeah, everyone follows ISO/IEC 8613-6 (originally published in 1989 (!!) but the revised in 1994). The full spec name seems to be called: > ITU-T Recommendation T.416 (1993) | ISO/IEC 8613-6:1994, Information technology — Open Document Architecture (ODA) and interchange format: Character content architectures. Anyway, ISO sells it here: http://www.iso.org/iso/home/store/catalogue_tc/catalogue_detail.htm?csnumber=22943 But ITU has a downloadable pdf: https://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-T.416-199303-I!!PDF-E&type=items The relevant section is 13.1.8. -David