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Use this button 
to display summary of filters applied on various fields / columns.
Filter for Empty/ Blank option (Available from RMsis 1.8.9.2 and later versions) :
- Blank filter has been provided for custom fields of type Single Select List, Multi Select List and Hierarchical View.
- Using this feature, "Blank" filter can be applied to get list of requirements/ test cases/ test steps which do not have value assigned for the field on which filter has been applied.
