[cvs-nhc98] Change "`%call' line can be omitted" to "must be omitted",

malcolm: Fri Nov 2 12:30:04 CET 2001 Update of /usr/src/master/nhc/docs In directory hinken:/tmp/cvs-serv8894 Modified Files: greencard.html Log Message: Change "`%call' line can be omitted" to "must be omitted", where there are no arguments.