\begin{Schunk}
\begin{Sinput}
 ls()
\end{Sinput}
\begin{Soutput}
 [1] "ddir"         "f1"           "f2"          
 [4] "f3"           "fd"           "fd13"        
 [7] "fdnew"        "fn"           "grades"      
[10] "keyl"         "keyw"         "options.orig"
[13] "opts.orig"    "ore1"         "par.orig"    
[16] "pjmar"        "swiss"        "tdir"        
[19] "toe1f"        "toe1n"        "V1"          
[22] "V2"           "V3"           "w1"          
[25] "w2"           "X"            "xt1"         
[28] "xt2"          "z"           
\end{Soutput}
\end{Schunk}
