tst_b_xref.pl    (main)           2 (lexical)       $ sth              intro
tst_b_xref.pl    (main)           2 (lexical)       $ lines            intro
tst_b_xref.pl    (main)           7 main            $ "                used
tst_b_xref.pl    (main)           7 (lexical)       @ row              used
tst_b_xref.pl    (main)           9 (lexical)       $ lines            used
tst_b_xref.pl    (main)           9 (lexical)      @$ lines            used
tst_b_xref.pl    (main)           9 (lexical)       $ sth              used
tst_b_xref.pl    (main)           9 (lexical)       $ sth              subused
tst_b_xref.pl    (main)           9 (lexical)       @ row              intro