If this CT_Cfvo element is a child of a CT_ColorScale and specifies the beginning of the color scale, this attribute MUST NOT be max.
If this CT_Cfvo element is a child of a CT_ColorScale and specifies the end of the color scale, this attribute MUST NOT be min.
If this CT_Cfvo element is a child of a CT_ColorScale and specifies the midpoint of the color scale, this attribute MUST NOT be max and MUST NOT be min.
If this CT_Cfvo element is a child of a CT_DataBar and specifies the cell value for the min length of the data bar, this attribute MUST NOT be max or autoMax.
If this CT_Cfvo element is a child of a CT_DataBar and specifies the cell value for the max length of the data bar, this attribute MUST NOT be min or autoMin.
If this CT_Cfvo element is not a child of a CT_DataBar, this attribute MUST NOT be autoMin and MUST NOT be autoMax.
If this CT_Cfvo element is a child of a CT_IconSet record, this value MUST NOT be max or min.
If the value is max, min, autoMax, or autoMin, f MUST NOT be present.