AspTab

 using cAlgo.API;
 namespace cAlgo.Plugins
 {
     [Plugin(AccessRights = AccessRights.None)]
     public class Test : Plugin
     {
         protected override void OnStart()
         {
             var aspTab = Asp.AddTab("Test Tab");
             var panel = new StackPanel {Orientation = Orientation.Vertical};
             var textBlock = new TextBlock {Text = "Show anything"};
             panel.AddChild(textBlock);
             var removeTabButton = new Button {Text = "Remove Tab"};
             removeTabButton.Click += args => Asp.RemoveTab(aspTab);
             panel.AddChild(removeTabButton);
             aspTab.Child = panel;
             aspTab.IsSelectedChanged += args => Print($"ASP tab selection changed, IsSelected: {args.AspTab.IsSelected}");
             aspTab.IsSelected = true;
         }
     }        
 }

 import clr
 clr.AddReference("cAlgo.API")
 from cAlgo.API import *
 class Test():
     def on_start(self):
         aspTab = api.Asp.AddTab("Test Tab")
         panel = StackPanel()
         panel.Orientation = Orientation.Vertical
         textBlock = TextBlock()
         textBlock.Text = "Show anything"
         panel.AddChild(textBlock)
         removeTabButton = Button()
         removeTabButton.Text = "Remove Tab"
         removeTabButton.Click += lambda _: api.Asp.RemoveTab(aspTab)
         panel.AddChild(removeTabButton)
         aspTab.Child = panel
         aspTab.IsSelectedChanged += lambda args: print(f"ASP tab selection changed, IsSelected: {args.AspTab.IsSelected}")
         aspTab.IsSelected = True