Setting Font Size in previously constructed charts.

[occusave]

I am facing the issue of re-doing some 50 charts that were done by
someone else- in a font (type and size) that are not to my liking.

I can go to each one, and redo the font, etc- but I was wondering if
there is anyway to set the default font/size, so that PPNT will re-do
the charts in the file automatically.

I understand that for new charts, I can create a default bar graph, or
default pie chart, etc- and on new charts, select these, and it ought
to be ok- but how to address charts/graphs that are already created ?

Thanks,