The example moves the cursor to a random row, column and page on the screen.
Sub Main()
Dim Sys As Object, Sess As Object, MyScreen As Object
Set Sys = CreateObject("EXTRA.System")
' Assumes an open session
Set Sess = Sys.ActiveSession
Set MyScreen = Sess.Screen
For i = 1 to 10
Randomize
NewRow = Int(MyScreen.Rows*Rnd())+1
NewCol = Int(MyScreen.Cols*Rnd())+1
NewPage = Int(MyScreen.Pages*Rnd())+1
MsgBox "Move to " + Str$(NewRow) + "," + Str$(NewCol) + "."
MyScreen.MoveTo NewRow,NewCol,NewPage
Next
End Sub