Macros

<applet codebase="../classes" code="geom.webeq.app.mdraw" height=200 width=300>
<param name=macros value="\define{\basis}[1]{e_#1}">
<param name=eq value="x=\basis{y + z}">
</applet>

<applet codebase="../classes" code="geom.webeq.app.mdraw" height=200 width=300>
<param name=macros value="\define{\at}{\tilde{\alpha}}
\define{\disc}[3]{\sqrt{#2^2 - 4 #1 #3}}">
<param name=eq value="\at = \frac{-b \pm \disc{a}{b}{c}}{2a}">
</applet>