This example inputs a string to a VT terminal session.
Sub Main()
Dim Sys As Object, Sess As Object, MyScreen As Object
Set Sys = CreateObject("EXTRA.System")
Set Sess = Sys.ActiveSession
' Assumes an open session
Set MyScreen = Sess.Screen
' This will put Hello User! in the upper left of a VT terminal
VT$ = Chr$(27) + "[H"
MyScreen.SendInput VT$ + " Hello User! "
End Sub