Symbols

1. Symbol effects

   Covers appear, bounce, disappear, pulse.

2. Symbol content transitions

   Covers replace, automatic.

3. Symbol effect types

   Covers AppearSymbolEffect, AutomaticSymbolEffect, BounceSymbolEffect, DisappearSymbolEffect.

4. Symbol effect options

   Covers SymbolEffectOptions.

5. Symbol effect protocols

   Covers SymbolEffect, DiscreteSymbolEffect, IndefiniteSymbolEffect, ContentTransitionSymbolEffect.

6. Structures

   Covers DrawOffSymbolEffect, DrawOnSymbolEffect.

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