HTC One M9 - Manual (Page 186)

Camera and Video 173
8. Tap a setting to adjust its values, and then tap .
9. Tap to save changes.
The edited photo is saved as a new photo. The original photo remains unedited.
Photo Shapes
Photo Shapes lets you add a shape to your image and fill it with another photo.
1. Tap > > Photo Editor and choose the photo you want to edit.
2. In the slideout menu that opens, tap Effects > PHOTOSHAPES.
3. Choose a second image to be the fill for your selected shape.
4. Choose a shape to add to your photo.
5. Tap to switch to the shape layer. You should see the shape layer icon .
6. Do any of the following:
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Drag the shape mask to move it.