svg animate - XML SVG - persist the end state of an animation

Question

After the end of an AnimateTransform action, the element snaps back to the original value.
This isn't exactly unexpected as it's in the SMIL documentation:

As with all animation elements, this only manipulates the presentation value, and when the animation completes, the effect is no longer applied

But it is unwanted. I'd like to find a way to persist the changes using XML animations

Here's an example in SVG

<svg width="200" height="200" viewBox="0 0 100 100"
     xmlns="http://www.w3.org/2000/svg" 
     xmlns:xlink="http://www.w3.org/1999/xlink">
  <rect id="outline" stroke="black" fill="white" 
        width="100" height="100" >
    <animateTransform id="one"
                      attributeType="XML"
                      attributeName="transform"
                      type="translate"
                      from="0" to="-7"
                      dur="1s" repeatCount="1" />
  </rect>
</svg>

Answer 1

fill="freeze" will persist the state of an animation e.g.

<svg width="200" height="200" viewBox="0 0 100 100"
     xmlns="http://www.w3.org/2000/svg" 
     xmlns:xlink="http://www.w3.org/1999/xlink">
  <rect id="outline" stroke="black" fill="white" 
        width="100" height="100" >
    <animateTransform id="one"
                      attributeType="XML"
                      attributeName="transform"
                      type="translate"
                      from="0" to="-7"
                      dur="1s" repeatCount="1"
                      fill="freeze"/>
  </rect>
</svg>