The Federal Geographic Data Committee (FGDC) Metadata Editor Add-In does not populate the REQUIRED information (shown in red text) in ArcGIS 10.0 like it does in ArcGIS 9.3.1 when using an FGDC stylesheet. If this is a known limitation or due to a difference between FGDC CSDGM (Content Standard for Digital Geospatial Metadata) and FGDC ESRI please update the documentation to reflect these changes.