the picture environment works
<br />
<br />
\]<br />
<br />
\begin{picture}(200,200)(0,0)\multiput(0,0)(40,10) {5}{\line(1,4){40}}\multiput( 0,0)(10,40){5}{\line(4,1){160}}<br />
\put(0,0){\vector(1,4){50}}<br />
\put(0,0){\vector(1,2){90}}<br />
\put(50,50){\circle*{10}} <br />
<br />
\put(160,40){\framebox(80,40)[r]{ \textcolor{blue}{\bf \[ x_{Bob} \] } } }<br />
\put(40,160){\textcolor{yellow}{\dashbox(80,40)[t]{ \textcolor{red}{ \[ t_{Bob} \] } } }}<br />
<br />
\qbezier(100,100)(200,100)(200,200)<br />
\linethickness{8pt} <br />
\textcolor{green}{\qbezier(0,0)(0,100)(100,100)}<br />
\linethickness{1pt} <br />
\qbezier(0,0)(0,100)(100,100)<br />
<br />
\linethickness{5pt} <br />
\put(0,0){\vector(2,1){220}}<br />
<br />
\end{picture}<br />
\[<br />