Typo.

curator_guide.rst

@@ -385,31 +385,42 @@ Prepare your update data in 3 columns in a spreadsheet:
 #. Field to be updated
 #. New value for field
 
-You should also include a header line at the top - this isn't used so can contain anything but it should be present.
+You should also include a header line at the top - this isn't used so can
+contain anything but it should be present.
 
-Columns must be tab-delimited which they will be if you copy and paste directly from the spreadsheet.
+Columns must be tab-delimited which they will be if you copy and paste directly
+from the spreadsheet.
 
-So, to update isolate id-100 and id-101 to serogroup B you would prepare the following: ::
+So, to update isolate id-100 and id-101 to serogroup B you would prepare the
+following: ::
 
   id     field     value
   100    serogroup B
   101    serogroup B
 
-Select the field you are using as a unique identifier, in this case id, from the drop-down list box, and paste in the data. If the fields already have values set, you should also check the 'Overwrite existing data' checkbox.  Press 'submit'.
+Select the field you are using as a unique identifier, in this case id, from
+the drop-down list box, and paste in the data. If the fields already have
+values set, you should also check the 'Update existing values' checkbox. Press
+'submit'.
 
 .. image:: /images/curation/batch_update_isolate2.png
 
-A confirmation page will be displayed if there are no problems. If there are problems, these will be listed.  Press 'Upload' to upload the changes.
+A confirmation page will be displayed if there are no problems. If there are
+problems, these will be listed.  Press 'Upload' to upload the changes.
 
 .. image:: /images/curation/batch_update_isolate3.png
 
-You can also use a secondary selection field such that a combination of two fields uniquely defines the isolate, for example using country and isolate name.
+You can also use a secondary selection field such that a combination of two
+fields uniquely defines the isolate, for example using country and isolate
+name.
 
-So, for example, to update the serogroups of isolates CN100 and CN103, both from the UK, select the appropriate primary and secondary fields and prepare the data as follows: ::
+So, for example, to update the serogroups of isolates CN100 and CN103, both
+from the UK, select the appropriate primary and secondary fields and prepare
+the data as follows: ::
 
   isolate     country     field      value
   CN100       UK          serogroup  B
-  CN103	      UK	  serogroup  B
+  CN103       UK          serogroup  B
 
 *********************************
 Deleting multiple isolate records