"Relief" applies an effect of making the layer pop out from the screen. For example, you can apply it on a Title text to make it look like a 3D object.
First, add a Text. Open ①Tool Select window and select ②Text Tool.
Tap the Canvas, then tap ①Add Text.
Type your text and adjust ①Font, Size, Color, etc. and then tap ②✓ Button.
Open ①Layer window. Tap ②Add New Layer, and add a new layer on top of the text layer.
Open ①Tool Select window and select ②Filter.
Select ①Relief and change the Reference to ②Lower Layer.
Adjust ①Flatness, Height, and Smoothness as you like and tap ②✓ Button.
Next, let’s apply Drop Shadow. Select ①Drop Shadow and adjust ②Radius, Angle, and Distance as you like and tap ③✓ Button.
Open ①Layer window and ②Hide the text layer. You can add your favorite background to make the title look more three dimensional.
And you’re finished.