Previous queries are displayed in and searched from 'Previous Query' panel.
Previous query status, retrieved patient information are informed in this panel. Users can find a previous query for reuse.
6.1. Previous Queries tab
'Previous Queries' tab displays previous queries.
6.1.2. Previous query information
Each previous query is displayed as one node.
Detailed information is structured under each query node.
For detailed information, click 
- Query name: query is formatted as Query name@Time[Date][User ID]
- Query results:
- Number of patients:
