Implemented comprehensive documentation updates for data analysis visualizations in ClickHouse Docs (Event Deltas). Rewrote the Event Deltas page around three workflows, establishing always-on distribution mode as the default and clarifying three selection shapes for comparison mode, with iterative drill-down via the Filter/Exclude popover. Separated the color intensity note from heatmap axes for improved readability. Added focused visuals (distribution mode and heatmap settings) and corrected data-source guidance, ensuring Event Deltas remains a sibling to Results Table and Event Patterns under Analysis Mode. These changes improve user onboarding, reduce ambiguity, and enable faster, self-serve data analysis workflows. Co-authored updates demonstrate collaboration and documentation rigor.