Output to file

Is there a way to have sequential SELECT queries output to the same  
file without having the second SELECT overwrite the first.

Here is a sample:

SELECT * FROM prof_texts_lines WHERE source_lines ~*  
'(enregistrement)' ORDER BY line_no ;

SELECT * FROM prof_texts_lines WHERE source_lines ~* '(dossier)' ORDER  
BY line_no ;

If I run those queries in succession, using the "Execute query, write  
result to file" button on the menu bar, the second query overwrites  
the results of the first query in the output file.

What I want is to have the results of the second query appended to the  
results of the first in the same file.  And I don't want the two  
query's results intermingled as would occur presumptively with one  
query statement using an or for the match text.

John