Document that transparent StyleBoxes/textures should be used for UI focus
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@ -228,7 +228,7 @@
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[StyleBox] used when the [OptionButton] is disabled (for right-to-left layouts).
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</theme_item>
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<theme_item name="focus" data_type="style" type="StyleBox">
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[StyleBox] used when the [OptionButton] is focused. It is displayed over the current [StyleBox], so using [StyleBoxEmpty] will just disable the focus visual effect.
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[StyleBox] used when the [OptionButton] is focused. The [code]focus[/code] [StyleBox] is displayed [i]over[/i] the base [StyleBox], so a partially transparent [StyleBox] should be used to ensure the base [StyleBox] remains visible. A [StyleBox] that represents an outline or an underline works well for this purpose. To disable the focus visual effect, assign a [StyleBoxEmpty] resource. Note that disabling the focus visual effect will harm keyboard/controller navigation usability, so this is not recommended for accessibility reasons.
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</theme_item>
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<theme_item name="hover" data_type="style" type="StyleBox">
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[StyleBox] used when the [OptionButton] is being hovered (for left-to-right layouts).
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