Event Operations : Change Duration : Change Duration Settings : Change Continuously Option
 
Change Continuously Option
The Change Continuously option lets you change the duration of notes continuously in ticks or by percentage. Adjust the Curve slider to modify the shape of the change.
Change Continuously in Ticks
Allows note lengths to change smoothly from one duration to another over time. Duration values are specified in quarter notes and ticks.
Change Continuously by Percentage
Allows note lengths to change smoothly from one percentage value to another over time.
The curve for this change can be adjusted (+/– 99) to affect how gradually the change occurs.
Limit Range
When selected, restricts the Change Duration command to a minimum and maximum range (in quarter notes and ticks).
Randomize
When selected, the Change Duration command is randomized by the specified percentage value. For example, using “Set all to” with a value of 480 ticks, along with a Randomize value of 50%, yields durations anywhere between 360 and 600 (+/– 25% of the duration value).