A user may modify a stimulation parameter in a plurality of stimulation
programs with a single adjustment. During stimulation therapy, the user,
such as a patient, may desire to change a parameter of the plurality of
stimulation programs. The patient may press a single button on an
external programmer to make the parameter change, or global adjustment,
to all of the plurality of stimulation programs. This global adjustment
eliminates the need for the patient to navigate through each of the
plurality of stimulation programs separately and adjust the parameter.
Additionally, changing the plurality of stimulation programs may be
desirable for uniform stimulation therapy between programs used by the
patient. The external programmer may calculate an appropriate parameter
change for each stimulation program to keep parameter ratios equal
between the plurality of stimulation programs.