# Available Characters with iso-8859-1

\documentclass[]{article}

\usepackage[iso-8859-1]{inputenx}
\usepackage[T1]{fontenc}

\begin{document}
¡
£
§
ª
«
¬
®
\end{document}

I was wondering. When I typeset a document using the package+option \usepackage[iso-8859-1]{inputenx} then I would naturally assume that I can use all characters that are defined for iso-8859-1 (Wikipedia link).

My exampke document here works but as soon as I add some characters then I get an error message. For example the Yen symbol (¥):

! LaTeX Error: Command \textyen unavailable in encoding T1.

In the inputenx documentation there you can find the following code in the iso-8859-1 section:

\ProvideTextCommandDefault{\textyen}{%
\TextSymbolUnavailable\textyen
}

Maybe this is related.

On the other hand maybe the error nessage refers to the fontenc T1.

## Main Question

Why are not all iso-8859-1 chatacters are availabe when using \usepackage[iso-8859-1]{inputenx}?

• Because there is no yen symbol in the T1 encoding, exactly as the message says. The input encoding option simply translates ¥ to \textyen. Load also textcomp. – egreg Sep 24 '16 at 17:00
• @egreg Thanks - I just didn't get it. – Dr. Manuel Kuehner Sep 25 '16 at 9:16