// Code and tab chrome operate the same Page objects.
first = Page()
first.title = "共享计数"
count = ui.state(0)
increment = Button("加一")
connection = increment.on("click", count.increment)
first.render(Column(24,16,TextBlock("切换页面后，计数对象继续存在"),ui.textOf(count,"value"),increment))

second = Page()
second.title = "另一个页面"
second.render(Column(24,16,TextBlock("点击上方 Tab 切换；× 关闭页面"),TextBlock("Ctrl+Tab 切换，Cmd/Ctrl+W 关闭；代码可调用 first.open() 重开")))

third = Page()
third.title = "窗口与布局"
third.render(Column(24,16,TextBlock("每个 Tab 都是同一个 VM 中的 Page 对象"),RectBlock(240,80,8,"#237A45")))
first.activate()
ui.window().setTitle("Endor Pages")