Question

the function key used to insert a key frame
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Answer 1

Explanation:

To insert a new frame, select Insert > Timeline > Frame (F5). To create a keyframe, select Insert > Timeline > Keyframe (F6), or right-click (Windows) or Control‑click (Macintosh) the frame where you want to place a keyframe, and select Insert Keyframe from the context menu

Answer 2

Answer:

shift+insert

ctrl+shift +delete to delete the key frame.