Vertical slides¶

Reveal.js supports a 2D layout: arrow keys move horizontally between top-level slides, and ↓ drills into a vertical stack. In kslides, group vertical slides with verticalSlides { }:

fun verticalBasic() {
  kslides {
    presentation {
      markdownSlide {
        content { "# Topic" }
      }

      verticalSlides {
        markdownSlide {
          content { "## Detail 1" }
        }
        markdownSlide {
          content { "## Detail 2" }
        }
        dslSlide {
          content { h1 { +"Wrap-up" } }
        }
      }
    }
  }
}

The block accepts any combination of markdownSlide, htmlSlide, and dslSlide.

Why use vertical stacks?¶

• Keep deep dives off the main horizontal flow — viewers can skip them with → instead of ↓.
• Group related sub-points under one section heading.
• Provide optional "appendix" slides that are reachable but don't break the main rhythm.