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Fit the sheet to this number of pages across (0 means use as many as needed).
public int FitPagesAcross { get; set; }
Causes C1Excel to select "fit to page" print mode, ignoring the value of the ScalingFactor property. Setting the FitPagesAcross or FitPagesDown properties automatically sets the AutoScale property to true, causing C1Excel to calculate the scaling factor based on the given number of pages and to ignore the value of the ScalingFactor property.