MS Power Point
In order to edit a chart, you can

click and drag the chart object
triple click the chart object
click the chart objects
double click the chart object

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MS Power Point
To change font size of a selected slide title, you:

Click Format, Title and choose a font from the font tab
Click the toolbars Font dropdown arrow and choose the font you prefer
Click Title, New Font, OK
Click the toolbar’s Increase Font Size button

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