INCLUDE <CL_ALV_CONTROL>
LOOP AT GT_FIELDCAT1 INTO GS_FIELDCAT. CASE GS_FIELDCAT-FIELDNAME. WHEN 'VBELN'. GS_FIELDCAT-STYLE = ALV_STYLE_FONT_BOLD + ALV_STYLE_FONT_UNDERLINED. ENDCASE. MODIFY GT_FIELDCAT1 FROM GS_FIELDCAT. ENDLOOP.