Dynamic tags

The tag types discussed thus far must be set up in the opening definitions section of your protocol, before the execution of the first STEP, and once they are defined, what they refer to cannot be changed. Dynamic tags are tags that can be defined later in your protocol and used to refer to the result of a selection statement when a tag is chosen from a group. They don't have a fixed identity as "meaning" any other particular tag; rather, they work as a placeholder tag that can still be reassigned to a new item later on in the execution of the protocol.

Dynamic tags are explained further in the section on randomization and selection from groups. But they are another type of tag that, once defined, work in the same way as the tags discussed thus far. They can reference a particular stimulus file or they can reference a group, and they can be used in selection statements or action statements in the same way as static tags.

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