from: Universala Vortaro, Zamenhof
centrigi + + 
to center + + centralize concentrate centrigi horizontale + + to center horizontally + + centrigi vertikale + + to center vertically + + centriĝi + + to center + + #centrigi #to center #centriĝi #to center #centrigi horizontale #to center horizontally #centrigi vertikale #to center vertically
