Ajuda del LibreOfficeDev 7.4
Centra horitzontalment els objectes seleccionats. Al Draw o a l'Impress, si seleccioneu un sol objecte, s'alinea el centre de l'objecte amb el centre horitzontal de la pàgina.
The vertical position of the selected objects is not affected by this command.
To align the individual objects in a group, choose
to enter the group, select the objects, right-click, and then choose an alignment option.To align the individual objects in a group, double-click to enter the group, select the objects, right-click, and then choose an alignment option.