Improve the Excel FAQ entry

csvbase/web/faq/entries/excel.md

@@ -10,14 +10,30 @@ category = "tools"
 ## Loading data
 
 1. On the Ribbon, go to the **Data** tab, then select **From web**
+
+![](/static/faq/excel-01-from-web.png)
+
 2. Enter in the table url, with `.xlsx` added on the end and click "Ok".
+
+![](/static/faq/excel-02-from-web-dialog.png)
+
 3. Check the preview and click "Load data"
 
+![](/static/faq/excel-03-navigator.png)
+
 This will load the table as a separate sheet in your workbook.
 
 You can refresh the table from csvbase by clicking **Refresh** on the tab on
 the Ribbon.
 
+![](/static/faq/excel-04-refresh.png)
+
+And you can configure the frequency of the refresh with the connection properties:
+
+![](/static/faq/excel-06-connection-properties.png)
+
+This allows you to create spreadsheets that always stay up to date.
+
 ## Sheet naming conventions
 
 Excel enforces some limitations on sheet names (`/` is not allowed) so csvbase
@@ -29,7 +45,7 @@ And they are truncated if they exceed 31 characters.
 
 ## Size limits
 
-Excel does not support sheets longer than 1,000,000 rows so those are not
+Excel does not support sheets longer than 1,048,576 rows so such tables are not
 available in XLSX format.
 
 ## Writing data from Excel