Parameters | Genetics | Reference Annotation Label Variable

Reference Annotation Label Variable
Use this field to specify the variable that uniquely identifies the SNPs for merging.
This variable must have the same values as the corresponding Annotation Label Variable column in the Annotation SAS Data Set.
To Specify the Reference Annotation Label Variable:
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All of the variables in the specified data set are displayed in the Available Variables field.
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Click to add the highlighted variable to the Reference Annotation Label Variable field, as shown below: