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The soulutf8 package is an extension of soul that works with the utf-8 encoding mechanism used by pdflatex. \documentclass[12pt, a4paper, landscape]{article} \usepackage[utf8]{vietnam} \usepackage{titling} \usepackage[left=3cm, top=2.5cm, bottom=2cm, right=2cm]{geometry} \usepackage{multicol} \usepackage{enumitem} \usepackage{color,soulutf8} \begin{document}...


texindy does not accept a non-alphabetical character as a sorting key, so you have to provide the sorting key as in: \index{alpha@$\alpha$} if you are writing in English and \index{alfa@$\alpha$} if you are wrting in Portuguese.


Find a font on your system that has the glyph. \documentclass{article} \usepackage{fontspec} \usepackage{newunicodechar} % use a font that has U+3012; ipag.ttf is in TeX Live \newfontface{\postalmarkfont}{ipag.ttf} \newunicodechar{〒}{{\normalfont\postalmarkfont 〒}} \begin{document} This is the postal mark 〒 \end{document} Here's a “more generic” way, ...


For XeLaTeX and LuaLaTeX, many mathematical characters are defined in the unicode-math package % !TeX encoding = UTF8 % !TeX program = lualatex \documentclass{standalone} \RequirePackage{unicode-math} \begin{document} $∀∃ℝ∈𝔻⟹$ \end{document}


With lualatex or xelatex you just need a font that has the characters. Noto Sans Ogham is installed at Overleaf and not surprisingly covers the Ogham block: The document is \documentclass{article} \title{Ogham} \usepackage{fontspec} \newfontfamily\og{Noto Sans Ogham} \date{September 2021} \begin{document} \maketitle \tracinglostchars=2 \section{...


The argument of \symbol expects TeX's number syntax. Normally numbers should be given in decimal, but hexadecimal numbers can be used too by adding a " in front of them. In this case, TeX requires them to be given in uppercase. So you need e.g. \symbol{"F1F9} instead of \symbol{f1f9}.


In your comment you stated that you installed TeXLive (TL) via the Ubuntu repositories. However you are using Ubunto 18.04, which ships only TL2017 in its repositories (see Therefore by executing sudo apt-get install texlive-full you are installing TL2017 and not TL2020. If you want to install a more recent ...

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