Normative references
Sections marked as "Note" or "Example" are non-normative. Everything else is normative.
- RFC2119
- RFC6901
- RFC3986
- JSON Schema
- CSS Color Module Level 4
- CSS Values and Units Module Level 4
- CSS Fonts Module Level 4
- CSS Text Module Level 3
- CSS Text Decoration Module Level 4
- CSS Easing Functions Module Level 1
- CSS Transitions Module Level 2
- CSS Animations Level 2
- CSS Backgrounds and Borders Module Level 3
- Filter Effects Module Level 1
- Layout - Foundations - Human Interface Guidelines
- Support different pixel densities
- Registering a custom font with your app
- NSAttributedString.Key.kern
- UIFont.Weight
- UIFontDescriptor.SymbolicTraits
- NSUnderlineStyle
- CALayer
- CIFilter
- CIGaussianBlur
- CIColorControls
- CIDropShadow
- NSShadow
- UIView.alpha
- NSStringTransform
- TextView#setLetterSpacing
- Typeface.Builder#setWeight
- FontVariationAxis
- Paint
- Paint#setShadowLayer
- RenderEffect
- RenderEffect#createBlurEffect
- RenderEffect#createColorFilterEffect
- RenderEffect#createDropShadowEffect
- ColorMatrixColorFilter
- View#setElevation
- ViewOutlineProvider
- View#setAlpha
- String#toUpperCase
- Fonts in XML
- Registered OpenType feature tags
- CAAnimation
- CAMediaTimingFunction
- UISpringTimingParameters
- CADisplayLink
- ValueAnimator
- TimeInterpolator
- PathInterpolator
- SpringForce
- Choreographer