New annotations are created by subtracting annotations from annotations on other tiers. This function can be started from > . This will open the Create Annotations From Subtraction window that is based on 4 steps.
Step 1/4: File and Tier Selection ( see Figure 5.92)
Step 2/4: Subtract Computation Criteria
In this step you can choose the subtraction computation criteria in the Subtract computation criteria window
You can choose one of the following:Subtraction based on 'exclusive or' logicIf this option is selected, the subtracts will be computed based on the 'Exclusive-or" logic.SubtractionSelecting this option, will allow you to select a reference tier from which the annotations of the other selected tiers will be subtracted from.
Click on the
icon to know more about the differences between the above
mentioned options.Step 3/4: Destination Tier Name Specification (see Figure 5.95)
Step 4/4: Destination Tier Value Specification
Here you can specify the value for the destination tier.
For detailed explanation on the options see Figure 5.96.
Finally, you can click on . The new tier will be created and populated.
