The tween timeline control appears in a panel beneath the current editing window where the Notes View also appears. If the Notes View is visible you can select the Tween Timeline simply by selecting the Tween Tab which will be labelled with the current Tween name. If there is more than one tween on the page, the tab label will change to reflect the tween you currently have selected.
You can resize the height of the timeline by dragging the bar dividing it from the editing window. Drag it up or down as required.
Each object in your tween will be represented by a single line in the timeline. This means you can add keyframes specific to each object and thereby perform different animations on different objects in the same tween.
The keyframes relating to that object are black rectangles in the relevant timeline. You can relocate these by clicking and dragging them left and right through the timeline.
If you drag the first keyframe for an object away from frame one the object concerned will not be visible until the frame where you put the first keyframe.
The frames in which an object is active are indicated by an rust-coloured bar. The inactive part of a timeline is coloured purple.
If you want objects to disappear part way through the tween you can use the Hide Keyframe option which will insert a keyframe which causes the object to be hidden. This is indicated in the timeline bar by an outline frame rectangle and the rust-coloured activity bar will stop.
In the example above the Star object does not appear until frame 11, transforms by frame 21 and then is hidden from frame 31 onwards. The circle object appears throughout and transforms by frame 41 and another keyframe at 51 where the tween ends. The purple section indicates the unused portion and the tween will repeat from this point (frame 51).
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