\begin{flushleft}
\hrulefill

\vspace*{-4mm}

\begin{alltt}
STk> (describe v){\em{
\#[\(<\)array\(<\)int*\(>\)\(>\) \#p4f8e4c] is an instance of class \(<\)array\(<\)int*\(>\)\(>\)
Slots are: 
     val = []
\#f} }
\end{alltt}
\begin{alltt}
STk> (define v3 (vector-int v)){\em{
\#[undefined]} }
\end{alltt}
\begin{alltt}
STk> (<= v v3){\em{

*** Error:
Bad number in a comparison: (a b)} }
\end{alltt}
\begin{alltt}
STk> (vector-set! v 0 1){\em{

*** Error:
vector-set!: not a vector: \#[\(<\)array\(<\)int*\(>\)\(>\) \#p4f8e4c]} }
\end{alltt}
\begin{alltt}
STk> (describe v){\em{
\#[\(<\)array\(<\)int*\(>\)\(>\) \#p4f8e4c] is an instance of class \(<\)array\(<\)int*\(>\)\(>\)
Slots are: 
     val = []
\#f} }
\end{alltt}
\begin{alltt}
STk> (<= v v3){\em{

*** Error:
Bad number in a comparison: (a b)} }
\end{alltt}

\vspace*{-5mm}

\hrulefill
\end{flushleft}