The Show animation makes nodes appear at the current keyframe and stay visible up until the end keyframe. This is done via the visibility of nodes and not via their transparency. Basically, this animations combines Hidden and Shown consecutive animations into one.

See also animations: Hide, Appear, Disappear, Shown, Hidden, Flash, Pulse

Adding the animation

First, choose nodes that you want to show.

Then, double-click on the Show animation effect in the Animation panel of the Animator.

This animation has 3 keyframes:

between keyframes 1 and 2 the specified nodes will stay hidden
at the keyframe 2 the specified nodes will appear and between keyframes 2 and 3 they will stay visible

Move the keyframes of the animation as needed.

Note: You can always move the keyframes of the animation.

Properties

You can change how the parameters are interpolated between the frames by modifying the Easing curve.