Practical guide and verification
How the effect is created
Portable “strikethrough text” often uses Unicode combining marks rather than real rich-text formatting. The mark is attached to characters, so appearance depends on the font and rendering engine.
Compatibility
Some apps normalize, reorder, filter, or poorly render combining characters. Test the generated text in the exact destination instead of assuming the preview will match everywhere.
Accessibility
Decorative combining marks can make copying, searching, pronunciation, and screen-reader output less predictable. For important content, native formatting such as HTML `<s>`/CSS or an editor’s strikethrough command is usually better.