The Current Value Editor gives you a way to use numeric input to affect the values of animation keys in Track View.
Absolute and relative value editing let you increment changes, or apply exact values. The name of the controller whose values are being changed appears above the axis choices.
This utility opens a dockable Current Value dialog that works for either Dope Sheet - Edit keys mode or Curve Editor. It doesn't work for Edit Ranges.
To use the Current Value Editor to apply an incremental change:
The numbers you enter add a relative increment to the existing values.
Displays the name of the controller above the X, Y, and Z fields.