_Added in 2.7_

*<notextile>on <level>:MSCROLL:<*#?=@>:<commands></notextile>*

Triggers when a user scrolls the message buffer in a window.

_See also [[/scrolltext]], [[$window]].mscrollpos, [[$window]].mscrollmax._

*Parameters*

<level> - The [[User Access Level]] for the event to trigger.
<*#?=!@> - The [[Matchtarget]] to listen to.
<commands> - The commands to be performed when the event listener's criteria is met.

*Example*

<pre>
on *:mscroll:#:{
  if ($window($active).mscrollpos == 1) {
    echo -sg scrollbar for $active is at top
  }
  else if ($window($active).mscrollpos == $window($active).mscrollmax) {
    echo -sg scrollbar for $active is at bottom
  }
}
</pre>