Length

This parameter is interpreted via the time base setting in the Bar Range/Time Base column, with the exception of the Random setting, which uses the time base of the affected events:

Add

Adds the value specified in the Parameter 1 column to the Length.

Subtract

Subtracts the value specified in the Parameter 1 column from the Length.

Multiply by

Multiplies the Length value with the value specified in the Parameter 1 column.

Divide by

Divides the Length value by the value specified in the Parameter 1 column.

Round by

This rounds the Length value using the value specified in the Parameter 1 column. In other words, the Length value is changed to the closest value that can be divided by the Parameter 1 value.

Set to fixed value

This sets the Length to the value specified in the Parameter 1 column.

Set Random Values between

This will add a random value to the current length. The added random value will be within the range specified with Parameter 1 and Parameter 2.