lini 0.22.0

Pretty diagrams, charts, and technical drawings from plain text, with fine-grained control. Compiles to clean, themeable SVG.
Documentation 
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// Link markers — the arrow / dot / diamond / crow heads and the full ER cardinality
// set (on any |line| via marker-*, or composed by the crow's-foot operators on
// either end) — plus template-internal links: a |define| whose body links its own
// children, so every instance routes itself.
{
  gap: 36; padding: 24;

  |room::group| { gap: 10; padding: 12; fill: --teal-wash; stroke: --teal-ink; } [
    |box#inlet| "in" {
      fill: --teal-soft; stroke: --teal-ink; color: --teal-ink;
    }
    |box#outlet| "out" {
      fill: --teal-soft; stroke: --teal-ink; color: --teal-ink;
    }
    inlet -> outlet "flows"
  ]
}

|block| "Markers & internal links" { font-size: 18; font-weight: bold; }

|group#ends| { gap: 20; } [
  |caption| "markers"
  |line| {
    points: -80 0, 80 0; marker-end: arrow; stroke: --sky-deep; stroke-width: 2;
  }
  |line| {
    points: -80 0, 80 0; marker-start: dot; marker-end: dot; stroke: --green-deep; stroke-width: 2;
  }
  |line| {
    points: -80 0, 80 0; marker-end: diamond; stroke: --purple-deep; stroke-width: 2;
  }
]

// The ER cardinality set — the `[min][max]` glyphs, on any |line| as a marker value.
|group#cardinality| { gap: 20; } [
  |caption| "ER cardinality"
  |line| {
    points: -80 0, 80 0; marker-end: one; stroke: --sky-deep; stroke-width: 2;
  }
  |line| {
    points: -80 0, 80 0; marker-end: crow; stroke: --sky-deep; stroke-width: 2;
  }
  |line| {
    points: -80 0, 80 0; marker-end: exactly-one; stroke: --blue-deep; stroke-width: 2;
  }
  |line| {
    points: -80 0, 80 0; marker-end: zero-or-one; stroke: --blue-deep; stroke-width: 2;
  }
  |line| {
    points: -80 0, 80 0; marker-end: one-or-many; stroke: --blue-deep; stroke-width: 2;
  }
  |line| {
    points: -80 0, 80 0; marker-end: zero-or-many; stroke: --blue-deep; stroke-width: 2;
  }
]

// The same set composes from the crow's-foot operators on **either** end [SPEC 9]:
// the ring `o` / bar `+` hugs the line, the max glyph (`+` one, `<`/`>` many) is outer.
|row#rel| { gap: 96; padding: 2 0 0 0; } [
  |caption| "cardinality operators — either end"
  |box#author| "Author"
  |box#book| "Book"
  author +-o< book "writes"
  // one author → zero-or-many books
]

// each |room| materialises its own inlet -> outlet link from the define body
|row#rooms| { gap: 76; } [
  |room#garden| "Garden"
  |room#kitchen| "Kitchen"
]

rooms.garden.outlet -> rooms.kitchen.inlet "carries"

// A chain marks every hop [SPEC 9]: `a -> b -> c` is exactly `a -> b; b -> c`
// (both arrows drawn), and each hop carries its own op — a bare first hop, a
// bidirectional second (`tap <- probe <-> gauge`).
|row#chains| { gap: 56; } [
  |caption| "chains — every hop marked"
  |box#relay| "relay"
  |box#hub| "hub"
  |box#sink| "sink"
  relay -> hub -> sink
]

|row#hops| { gap: 56; } [
  |box#tap| "tap"
  |box#probe| "probe"
  |box#gauge| "gauge"
  tap <- probe <-> gauge
]