# PageMButton (filter, event)

This is the ``menu-style'' equivalent of PageButton. It switches to the next or previous child of a TSplit. Its target is a TSplit, which may be specified by the `For` property; otherwise the target the nearest TSplit ancestor of the PageMButton itself.

For
  (Symbol)
  If given, names the target, which must be a TSplit.
Back
  (Boolean, `FALSE`)
  If true, the button advances backward among children of the TSplit, otherwise it advances forward.

Behavior
  PageMButton is like an MButton, but before generating an event, it switches the children of a TSplit. However, if the TSplit is not Circular, and if the last (first) child is already being displayed, nothing happens and no event is generated.
Shape
  The natural shape of its child (i.e., with no shrink or stretch), plus the border around the button.
See Also
  LinkMButton, PageButton, and TSplit