class Paragraph;
class Row;
-int numberOfSeparators(Paragraph const & par, Row const & row);
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-int numberOfHfills(Paragraph const & par, Row const & row);
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-int numberOfLabelHfills(Paragraph const & par, Row const & row);
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bool hfillExpansion(Paragraph const & par, Row const & row,
lyx::pos_type pos);