Unicode: Resolving the issue of `Package inputenc Error: Unicode char not set up for use with LaTeX`
unicode - Enabling UTF-8 file encoding in various text editors - TeX - LaTeX Stack Exchange
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Order of packages with Quick Start wizard · Issue #2901 · texstudio-org/texstudio · GitHub
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4.3.1 The inputenc Package
Using inputenc/fontenc for Cyrillic changes the style of the paper defined in the stylefile - TeX - LaTeX Stack Exchange