If this statement is given as a substatement to 'extension',
it applies to all 'use-in' statements.
If this statement is given as a substatement to 'extension',
it applies to all 'use-in' statements.
If this statement is given as a substatement to 'tailf:substatement',
it applies to this substatement.";
}
If this statement is given as a substatement to 'tailf:substatement',
it applies to this substatement.";
}