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: Create timelines that append tweens in order and place them precisely with the position parameter (absolute times, relative offsets, labels, "<" and ">" placement). - Labels, Defaults, and Nesting: Use addLabel() for readable sequencing, constructor defaults so child tweens inherit duration and ease, and nest child timelines inside a master timeline. - Playback Control: Play, pause, reverse, restart, seek with time() and progress(), and kill timelines. - Use Case: Build a page intro where a logo slides in, a headline fades up 0.2s later, and a button scales in at the same time as the headline, all orchestrated by one timeline with labels. ## Quick Start Create a GSAP timeline that fades in a header, then slides in a card 0.3 seconds later, using the position parameter and a shared default ease.