símbolo de retorno de carro, nuevo comando

Question

Cuando defino esto:

\newcommand{\return}{\raisebox{1.2pt}{\setlength{\fboxsep}
  {2pt}\ovalbox{$\hookleftarrow$} }}

En tipos de compilador de salida:

Undefined control sequence.
<argument> \setlength {\fboxsep }{2pt}\ovalbox {$\hookleftarrow $}

Mis paquetes:

\documentclass[russian,utf8,simple,hpadding=5mm]{eskdtext}
\usepackage[T2A]{fontenc}
\usepackage{pscyr}
\usepackage{listings}
\usepackage{color}
\usepackage{caption}
\usepackage{amstext}
\usepackage{amsmath}

Answer 1

Para visualizar las pulsaciones de teclas, puede utilizar elkeystrokeo elmenukeyspaquete.

\documentclass{article}
\pagestyle{empty}% for cropping
\usepackage{keystroke}
\usepackage{menukeys} 
\begin{document}
\verb|\Return| \Return % from package keystroke

\verb|\keys{\return}| \keys{\return} % from package menukeys
\end{document}