Haxe

(with the flixely bitmap 9-slice theme ofc)

And OK thanks, that's a very useful one once styled

Animating position... I think I see how to do it, but is there an existing way to do relative position? (From current to current + 100 px)

An example I'm looking at utilizes percent height to do a similar thing

Oh, maybe I can set the start and end points and then parse that CSS string all at once

I could just animate it in flixel... less string parsing

im not sure i follow... what are you trying to do? Animate left/top? You could use css animations, or the tweener directly, or as you say, flixel (which ofc then wouldnt be cross framework, but maybe that doesnt matter for your app?)

Yeah animate left, but I'd prefer to animate "relative left"

I'm not sure what you mean by using the tweener directly

left is relative left... or at least it should be

No I mean like, +50 from where you're currently at

In the CSS it seemed like I had to define a hard start and end

i presume you dont want to use css animations?

```haxe
var button = main.findComponent("button", Button);
var test = main.findComponent("test", Button);
test.onClick = function(e) {
    Actuator.tween(button, {left: button.left + 100}, 0.5, {
        easingFunction: EasingFunction.EASE
    });
}
```

Are tables implemented and are there examples of how to use them (HTML5)?

my initial thought was "probably a misspelling of `Actuate`" 😄

It has its own (fairly simple) tween engine