TabStrip1.LoadLayout("Page1", 1)
TabStrip1.LoadLayout("Page2", "aaa" & CRLF & "bbb")
TabStrip1.LoadLayout("Page3", 3)
Dim lbl As Label = GetAllTabLabels(TabStrip1).Get(1) 'second tab in this example
lbl.SingleLine = False
And if you want to add a little flair to the tabstrip label with csbuilder, use this:
B4X:
tsProfile.LoadLayout("Layout6", "")
.....
Dim lbl As Label = GetAllTabLabels(TabStrip1).Get(1) '2nd tab in your example
lbl.SingleLine = False
Dim cs As CSBuilder=lbl
cs.Initialize.Size(16).Typeface(Typeface.MONOSPACE).Color(Colors.Red)
cs.Append("DOCUMENTATION").Pop.append(CRLF).color(Colors.Blue).Append("ACCOUNTS").PopAll
lbl.Text=cs