One way you can call attention to text on a slide is to add a border around it.
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Select the text to add a border to.
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On the Insert tab, select the rectangle shape and then click and drag on the slide to draw the shape.
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With the shape selected, on the Shape tab, select Shape Fill > No Fill.
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Still on the Shape tab, select Shape Outline, and do the following:
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Under Theme Colors, pick a border color.
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Select Weight, then pick a thickness for the border.
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