Changed intro text

app.py

@@ -59,7 +59,7 @@ depends on factors such as the type of documents or queries. Information taken f
     """
     **Exact term keyword search**
     
-    1. Load in data file (ideally a file with '_cleaned' at the end of the name), with (optionally) the '...search_index.pkl.gz' in the same folder to save loading time. 2. Select the field in your data to search. A field with the suffix '_cleaned' means that html tags have been removed. 3. Wait for the data file to be prepared for search. 4. Enter the search term in the relevant box below and press Enter/click on 'Search text'. 4. Your search results will be saved in a csv file and will be presented in the 'File output' area below.
+    BM25 based keyword search over tabular open text data. 1. Load in data file (.csv, .xlsx, or .parquet), and if you have searched with this dataset and saved the processing outputs, the '...search_index.pkl.gz' in the same folder to save loading time. 2. Select the field in your data to search. A field with the suffix '_cleaned' means that html tags have been removed. 3. Wait for the data file to be prepared for search. 4. Enter the search term in the relevant box below and press Enter/click on 'Search text'. 4. Your search results will be saved in an .xlsx file and will be presented in the 'File output' area below.
     """)
         with gr.Row():
             current_source = gr.Textbox(label="Current data source(s)", value="None")