This tool allows you to upload textfiles (Save As.. -> CSV-file / Text-file within Excel) either in collumn or row format.
The values from the text-file are then converted to a string for a query in SRS.
You must specify what format you are uploading (Tab-delimited / Comma-delimited etc.) and the layout (columns or rows) of your file, you can also define your type of query (OR / AND / BUT NOT).