In Animate, you will also find the Xsheet View menu button in the top-left corner. This button allows you to access commands related to the Xsheet view.
The Xsheet view lets you read your timing vertically, displays the drawing layers as columns and shows the drawing’s name. You also see the functions and keyframes of the motion paths in the Xsheet’s function columns. The value of each keyframe is shown in the Xsheet view, these are black squares in the Timeline view. The Xsheet view contains details than the Timeline view, and is faster and easier to read.