=== meta
title = "GEML runtime — showcase"
===

# GEML runtime showcase

This page was produced from a single `.geml` file by the GEML runtime
(`geml render`). The table below is **sortable** (click a header) and
**filterable** (type in the box), and every chart is inline SVG drawn straight
from that table. No data is copied into the charts; see [[#fy25]] for the source.

=== note {#welcome}
This is a callout. It carries *emphasis*, **strong**, `code`, and inline math
such as $e^{i\pi} + 1 = 0$.
===

## What works today

- [x] Parse the document into a checked model
- [x] Render to one self-contained, interactive HTML file
- [x] Tables you can sort and filter
- [x] Charts drawn from a table, as inline SVG
- [ ] Bundle Mermaid and KaTeX offline (still CDN-loaded)

## A computed table

The `FY` column and the `Total` row are computed at build time, not written by
hand.

=== table {#fy25 caption="FY2025 revenue by segment ($M)" format=csv header=1 compute="FY [%.1f] = Q1 + Q2 + Q3 + Q4" summary="Segment = 'Total'; Q1 = sum(Q1); Q2 = sum(Q2); Q3 = sum(Q3); Q4 = sum(Q4); FY [%.1f] = sum(FY)"}
Segment,   Q1,   Q2,   Q3,   Q4
Cloud,     124,  131,  142,  158
Hardware,  88,   84,   90,   95
Services,  45,   47,   49,   52
Edge,      19,   23,   27,   33
===

## Charts, drawn from that table

=== diagram {#rev-bar format=geml-chart data=#fy25 type=bar x=Segment y=FY caption="Full-year revenue by segment (bar)"}
===

=== diagram {#rev-quarters format=geml-chart data=#fy25 type=bar x=Segment y=Q1,Q2,Q3,Q4 caption="Quarterly revenue, grouped (multi-series bar)"}
===

=== diagram {#rev-line format=geml-chart data=#fy25 type=line x=Segment y=Q1,Q2,Q3,Q4 caption="Quarterly trend (multi-series line)"}
===

=== diagram {#rev-pie format=geml-chart data=#fy25 type=pie x=Segment y=FY caption="Share of full-year revenue (pie)"}
===

## A hosted diagram

GEML never interprets a diagram body; it routes it to a renderer. Mermaid is
loaded from a CDN in this build.

=== diagram {#flow format=mermaid caption="Review flow"}
graph LR
  A[Draft] --> B{Review}
  B -->|ok| C[Publish]
  B -->|back| A
===

## Math

=== math {#gauss caption="Gaussian integral"}
\int_{-\infty}^{\infty} e^{-x^2}\,dx = \sqrt{\pi}
===

## Code

=== code {#hello lang=python}
print("hello from a .geml file")
===

A broken reference, a duplicate id, or a typo'd chart column would fail this
render with a build error. This document has none, so it renders clean.