// retoor <retoor@molodetz.nl>
import "html" for Document
var doc = Document.parse("<div id='container'></div>")
var p = doc.createElement("p")
System.print(p != null) // expect: true
System.print(p.tagName) // expect: P
var span = doc.createElement("span")
System.print(span.tagName) // expect: SPAN
var div = doc.createElement("div")
System.print(div.tagName) // expect: DIV
p.textContent = "New paragraph"
System.print(p.textContent) // expect: New paragraph
var container = doc.getElementById("container")
container.appendChild(p)
System.print(container.children.count) // expect: 1
System.print(container.firstChild.tagName) // expect: P