Standard AutoCAD fonts (like simplex.shx or romans.shx ) do not support the full range of Vietnamese characters—no dấu sắc, huyền, hỏi, ngã, nặng, and no Đ or đ.
What is this file? Is it a virus? Do you need it? And more importantly, how do you get your text to stop displaying as question marks (???).
If you’ve ever opened an AutoCAD drawing from a Vietnamese colleague or a local construction firm, you’ve probably been greeted by the dreaded "Missing SHX File" dialog box. Among the usual suspects like viet.shx or vnromans.shx , one name pops up that often leaves users scratching their heads: tai_font_vnsimli.shx .
Let’s break it down. In simple terms, tai_font_vnsimli.shx is a custom shape file for AutoCAD. It belongs to a family of Vietnamese-specific fonts designed to solve a historic problem: Typing Tiếng Việt in CAD.
