Date: Mar 2, 2010 3:38 AM
Author: André Hautot
Subject: edge labels

I need to enlarge the size of the characters "0" and "1" in the display 
of the following binary tree :

TreePlot[{{1 -> 2, "0"}, {2 -> 4, "0"}, {3 -> 6, "0"}, {1 -> 3,  "1"}, 
{2 -> 5, "1"}, {3 -> 7, "1"}}, Top]

but I have no idea how to do that.  Any idea ?
Thanks in advance,
Andre