cfvo: A CT_Cfvo element (section 2.6.26) that specifies the cell values corresponding to the min/max length of the data bar. If there exist CT_Cfvo ([ISO/IEC29500-4:2011] section A.2) elements in this sheet (1) that are child elements of a CT_DataBar ([ISO/IEC29500-4:2011] section A.2) element that is a child of a CT_CfRule ([ISO/IEC29500-4:2011] section A.2) element that is a parent of a CT_ExtensionList ([ISO/IEC29500-4:2011] section A.2) element with a child CT_Extension ([ISO/IEC29500-4:2011] section A.2) element that has a child ST_Guid ([ISO/IEC29500-4:2011] section A.2) element equal to the id attribute of this complex type’s parent CT_CfRule element (section 2.6.27), those CT_Cfvo elements SHOULD<11> be ignored. The first child CT_Cfvo element specifies the condition corresponding to the min length of the data bar. The second child CT_Cfvo element specifies the condition corresponding to the max length of the data bar.
