This part of ISO 3098 specifies proportions and lays down dimensions for diacritical and particular marks for the Latin alphabet for use together with the characters shown in ISO 3098-1. These marks are listed in tables 2 and 3 according to various languages in which they are used.
DS/ISO 3098-3:1992 history
2000DS/EN ISO 3098-4:2000 Technical product documentation - Lettering - Part 4: Diacritical and particular marks for the Latin alphabet
1992DS/ISO 3098-3:1992 Technical drawings. Lettering. Part 3 : Diacritical and particular marks for the Latin alphabet
DS/ISO 3098-3:1992 Technical drawings. Lettering. Part 3 : Diacritical and particular marks for the Latin alphabet was changed to DS/EN ISO 3098-4:2000 Technical product documentation - Lettering - Part 4: Diacritical and particular marks for the Latin alphabet.