Edit Multiple Annotation Properties
This dialog is for editing the properties for a list of annotations.
Prior to this you should have setup some property templates
To add a property to the annotations, drag the template from the list on the right to the annotation properties on the left
You may edit the values of the properties here. This will have different effects depending on the properties of the annotations you selected:
If all the annotations you selected already have the property template assigned to them, the background of the property will be white.
If some of the annotations do not have the property template assigned to them, the background will be grey and a button will be visible to the left of the property value:

Clicking the button will add the property template to the annotations lacking it.
If the annotations selected don't all have the same value then the property value will be grey:

If you leave it alone then then the values will be preserved. If you want to set them all to the same value, edit the value, or to clear all the values, click the 'Clear All' button.