我想用xtable函数画表格，但出来的结果是一些latex格式代码？我也不懂，怎么样才能显示出表格来啊？？比如出现我上传的图中所示的表格？

请看以下代码：最后我要怎么样才能看到表格啊
先加载xtable包
> data(tli)
> ## Demonstrate data.frame
> tli.table <- xtable(tli[1:20,])
> digits(tli.table)[c(2,6)] <- 0
> print(tli.table)
% latex table generated in R 2.12.0 by xtable 1.5-6 package
% Sun Dec 26 20:51:09 2010
\begin{table}[ht]
\begin{center}
\begin{tabular}{rrlllr}
  \hline
& grade & sex & disadvg & ethnicty & tlimth \\
  \hline
1 & 6 & M & YES & HISPANIC & 43 \\
  2 & 7 & M & NO & BLACK & 88 \\
  3 & 5 & F & YES & HISPANIC & 34 \\
  4 & 3 & M & YES & HISPANIC & 65 \\
  5 & 8 & M & YES & WHITE & 75 \\
  6 & 5 & M & NO & BLACK & 74 \\
  7 & 8 & F & YES & HISPANIC & 72 \\
  8 & 4 & M & YES & BLACK & 79 \\
  9 & 6 & M & NO & WHITE & 88 \\
  10 & 7 & M & YES & HISPANIC & 87 \\
  11 & 3 & M & NO & WHITE & 79 \\
  12 & 6 & F & NO & WHITE & 84 \\
  13 & 8 & M & NO & WHITE & 90 \\
  14 & 5 & M & NO & WHITE & 73 \\
  15 & 8 & F & NO & WHITE & 72 \\
  16 & 6 & F & NO & BLACK & 82 \\
  17 & 4 & M & NO & WHITE & 69 \\
  18 & 3 & F & YES & HISPANIC & 17 \\
  19 & 3 & M & NO & HISPANIC & 37 \\
  20 & 5 & M & NO & WHITE & 70 \\
   \hline
\end{tabular}
\end{center}
\end{table}