Use the Add Time Tag dialog to define a time tag for the current spot in time.
The name of the tag appears in the tag slot, and will reappear whenever you go to that spot in time.
To jump to a defined tag, click the Time Tag slot and choose the tag name from the list.
To rename, delete, or change the properties of a tag, click the Time Tag field and choose Edit Tag.
Lets you assign another tag to which the current tag will maintain a relative offset.
For example, if you have a tag at frame 10 called First and you create a second tag at frame 30 called Second, if you move the position of First to frame 25, Second will move to frame 45 to maintain the 20-frame offset between the two tags.
This is a one-way offset. If you change the time position of the second tag in the example, the first tag is not affected. Circular dependencies are not allowed: you can't have First relative to Second and Second relative to First.