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diff --git a/src/input/operator.input.pamphlet b/src/input/operator.input.pamphlet
new file mode 100644
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+\documentclass{article}
+\usepackage{axiom}
+\begin{document}
+\title{\$SPAD/src/input operator.input}
+\author{The Axiom Team}
+\maketitle
+\begin{abstract}
+\end{abstract}
+\eject
+\tableofcontents
+\eject
+\section{License}
+<<license>>=
+--Copyright The Numerical Algorithms Group Limited 1991, 1995.
+@
+<<*>>=
+<<license>>
+)clear all
+L n ==
+  n = 0 => 1
+  n = 1 => x
+  (2*n-1)/n * x * L(n-1) - (n-1)/n * L(n-2)
+dx := operator("D") :: OP(POLY FRAC INT)
+evaluate(dx, p +-> differentiate(p, 'x))$OP(POLY FRAC INT)
+E n == (1 - x**2) * dx**2 - 2 * x * dx + n*(n+1)
+L 15
+E 15
+
+@
+\eject
+\begin{thebibliography}{99}
+\bibitem{1} nothing
+\end{thebibliography}
+\end{document}