You are trying to display certain parts of a template only if there is at

least one level below the current page?

With numRows you can determine if there is something to show or not.

Tsref, numRows

30 = TEXT
30 {
  wrap = <ul><li>|</li></ul>
  data = leveltitle:1
  if {
    isTrue.numRows {
      table = pages
      select {
                # select properties here if necessary
      }
    }
  }
}