Double-Colon Rules Info page needs an example

[Dan Jacobson]

The Double-Colon Rules Info page needs an example snippet.

I think I figured out a use just from reading the documentation however:
bus8.htm:: #always check for a fresher version
        wget -N http://www.fybus.com.tw/bus8.htm
fybus.w3m:bus8.htm
        w3m -cols 99 -dump $? > $@

Or an even more thrifty top line:
bus8.htm::
        test `find $@ -ctime -1`||wget -N http://www.fybus.com.tw/bus8.htm