A hard to find shortcut key in Flash Alt+shift

In fact, this shortcut is very early in other places to see, but suddenly forget where the-_-at that time feel not how practical, today only to find a true classic!

In the space of the timeline panel in the Flash IDE, hold down the Alt+shift and double-click the

It can become a structure like the next.

The advantage is that you can avoid when adjusting the time axis panel size by mistakenly dragging the auxiliary line . So using this kind of structure will reduce the work mistake, believe this kind of mistake many friends have met.