\documentclass[onedown-examples]{subfiles} \begin{document} \noindent \begin{tcolorbox}[colback=red!5!white,colframe=red!75!black, title={Use card symbols like {\setdefaults{colors=b+w}♣,♢,♡,♠} directly as input}] %\begin{HBox}{Use card symbols like {\setdefaults{colors=b+w}♣,♢,♡,♠} directly as input} If you want to use the card symbols {\setdefaults{colors=b+w}♣,♢,♡,♠} within your \LaTeX-document, then put these lines in your preamble. That's all. \\[0.3em] \verb|\DeclareUnicodeCharacter{2660}{\Sp}| \verb|\DeclareUnicodeCharacter{2661}{\He}| \\ \verb|\DeclareUnicodeCharacter{2662}{\Di}| \verb|\DeclareUnicodeCharacter{2663}{\Cl}| \\ \verb|\DeclareUnicodeCharacter{2664}{\Sp}| \verb|\DeclareUnicodeCharacter{2665}{\He}| \\ \verb|\DeclareUnicodeCharacter{2666}{\Di}| \verb|\DeclareUnicodeCharacter{2667}{\Cl}| \\[0.3em] %\vspace{0.3em} %\\[0.3em] If you put them in a file \textbf{\emph{onedown.symbols}}, somewhere where \LaTeX{} can find it, then the \OneDown package will take care of loading it. An apropriate place would be in your .texmf directory. \end{tcolorbox} %\end{HBox} \begin{tcolorbox}[colback=red!5!white,colframe=red!75!black, title={To enter these card symbols on your keyboard, use this with Linux}] Add following lines to your \emph{.Xmodmap} and run \textbf{xmodmap .Xmodmap} \\[0.3em] {\ttfamily keycode 38 = 0x0061 0x0041 0x0061 0x0041 0x1002663 0x1002667 0x00e6 \\ keycode 39 = 0x0073 0x0053 0x0073 0x0053 0x1002662 0x1002666 0x100017f \\ keycode 40 = 0x0064 0x0044 0x0064 0x0044 0x1002661 0x1002665 0x00f0 \\ keycode 41 = 0x0066 0x0046 0x0066 0x0046 0x1002660 0x1002664 0x01f0 \\ keycode 65 = space nobreakspace space nobreakspace nobreakspace NoSymbol \\ } \tcblower Now you can enter {\setdefaults{colors=b+w}♣,♢,♡,♠} with \emph{Shift+AltGr} a,s,d,f \end{tcolorbox} \end{document} \endinput