What problem does it solve? Coordinating multiple animations with chained delays is fragile and hard to maintain. This Skill provides the official GSAP patterns for sequencing tweens with gsap.timeline(), so animations run in a controlled, readable order. ## Core Features & Use Cases - Timeline Sequencing: Append tweens in order or place them precisely with the position parameter (absolute times, relative offsets, labels, "<" and ">" placement). - Labels, Defaults & Nesting: Use addLabel() for readable choreography, constructor defaults for shared duration/ease, and nest child timelines inside a master timeline. - Playback Control: Play, pause, reverse, restart, seek with time()/progress(), and kill timelines and their children. - Use Case: Build a hero intro where a logo fades in, a headline slides up 0.2s later, and a CTA appears at the "outro" label, all controlled from one timeline. ## Quick Start Create a GSAP timeline that fades in the header, then slides the content up 0.3 seconds later using the position parameter.