S on <chr_abbr type="reg" class="ss" expan="com" cert="no">com</chr_abbr>peign<chr_abbr type="reg" class="dc" expan="on" cert="no">o-hbar</chr_abbr> p<chr_abbr type="reg" class="dc" expan="re" cert="no">[apost]</chr_abbr>mier<chr_var letter="s" var="long">∫</chr_var> re<chr_abbr type="reg" class="dc" expan="qui" cert="no">q-vbar</chr_abbr>ert. 