DanielWagnerHall on behalf of AGoogler: Fixing and standardizing the jsdoc contracts and comments to the functions in action.js. the changes: (1) The function contract is not the particular event sequence used to simulate the action (e.g. mouseover, mousedown, mousemove, etc) but the abstract user action itself (e.g. "click"). The implementation and events underneath are whatever they need to be and will continue to be refined to best simulate that abstact action. (2) Each contract stipulates with which device (mouse, keyboard, touchscreen) it is performed. (3) Other format and language standardization.

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