The key is located at this time in the animation.
Activate this option if you want to protect a key from inadvertently being edited.
Use this setting to mute a key. When a key is muted, any interpolation or change in value(s) between the muted key and the subsequent key will not take place. Once the animation reaches the next key, values will instantly jump to those contained in that key. Muting a key turns the animation for that key off until the next key is reached.
Drag the Target Object from the Object Manager into this field.
Use this setting to adjust the interpolation between keys. This lets you speed up or slow down the morphing process between keys.
Usually morphing takes places between neighboring keys. If the Soft option is enabled, keys prior to the first and after the last morph keys will also be taken into account. This makes the movement more harmonious.