Sets the alpha (transparency) of the given object.
- Number - a floating-point number between 0 and 1: 1 is fully opaque, 0 is transparent (in fact, invisible).
Makes frame MyFrame translucent, more visible than not:
Fade the whole UI so that it becomes barely visible:
As of patch 2.1.0, transparency propagates down through all child objects.
- "Frame alpha now propagates in the same way as scale (though is clamped between 0 and 1 on each object). This means you can cleanly fade the whole UI or specific frame assemblies."
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