add initial version

lib.typ

@@ -0,0 +1,39 @@
+#let law(
+  symbol: "§",
+  cols:3,
+  title: none,
+  toc_show: true,
+  toc_header: "Inhaltsverzeichnis",
+  body,
+)={
+    
+  set page(
+    paper: "a4",
+    margin: (
+      top: .5cm,
+      bottom: .5cm,
+      left: 1.5cm,
+      right: .5cm
+    ),
+  )
+  
+  set par(justify: true)
+  set text(font: "New Computer Modern", size: 7pt, lang: "de", region: "AT")
+  set par(leading: 2pt)
+
+  if title != none {
+    heading(level: 1)[#title]
+  }
+
+  columns(cols, gutter: 1em)[
+    #if toc_show [
+      #outline(title: toc_header)
+    ]
+    // Show rule for article headers
+    #show regex("^" + symbol + " \d+.*"): it => {
+      heading(level: 5, numbering: none, it, outlined: false)
+    }
+    #body
+  ]
+}
+