This topic is only for the charts that were installed with Phonology Assistant. They are referred to as default charts. You see them in the Saved Charts pane, along with any charts you saved.
When you 
Reset
Chart or 
Restore
Default Charts, rows or columns that you deleted
are returned to the chart(s), and any renamed
default charts are returned to their original (installed) names. Restore Defaults also reinstalls a default
chart that you deleted.
Do either of the following in the Distribution Charts view:
Reset ChartTo reset the current chart, do these steps:
Display the chart you want to reset.
Do one of the following:
Right-click the chart,
and then click Reset
Chart.
Click the down arrow
(
)
at the right of 
(Save
Current Chart) button, and then click
Reset Chart.
A question box appears.
Click Yes.
Restore Default ChartsTo reset all the defaults charts, do these steps:
Click any chart in the Saved Charts pane, and then click
(Restore Default Charts).
A question box appears.
Click Yes.