newseg
wheads[tmp] = wsegs[tmp] = wtmp = newseg();
wheads[tmp]->nseg = wtmp = newseg();
wtmp = newseg();
wheads[tmp] = wsegs[tmp] = wtmp = newseg();
int nseg = 0, i, newseg = 1;
newseg = 0;
if (newseg) {
newseg = 1;