Introduction In the realm of Vietnamese technical documentation, especially within AutoCAD and other CAD software, font choice is not merely aesthetic—it is functional. Two names frequently arise: Tim font (often part of the .shx family) and VNI-Roman.shx . While both support Vietnamese diacritics, their encoding standards, compatibility, and usage contexts differ significantly.

If you are maintaining older drawings or working in a strictly VNI-encoded environment, VNI-Roman.shx is the more reliable and future-proof choice between the two. Tim font is largely obsolete. For new projects, avoid both—use Unicode fonts and standard Telex or VNI input with proper CAD support for multilingual text.