See http://code.google.com/apis/chart/styles.html#shape_markers

tP = <marker type>
0000FF = <color>
1   = <data set index>
1   = <data point>
10 = <size>

and you can have a priority too (-1  1 +1).

Part of the problem is  Google Chart API is the "assembly language" of
charts. It is very low-level and tedious to work with directly. You
may wish to consider a wrapper API in the language of your choice:
http://groups.google.com/group/google-chart-api/web/useful-links-to-api-libraries.
I generated the examples above with my own wrapper API. Long URLs can
become quickly inscrutable.

Let us know if you have more questions.

-Julien
http://charts4j.googlecode.com

On Jan 7, 4:14 pm, Ray Julich <[email protected]> wrote:
> I think I figured it out part of it:
>
> chm=tP,0000FF,1,1,10
>
> tP = the label's text
> 0000FF = the label's color
> 1   = the data point to put the note next to
> 1   = ?
> 10 = font size
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