The Group command creates or updates a "group" object. The grouped objects are collected underneath a + sign in the object tree (see images).
<gallery> Image:group_off.png|Three EF-Hand proteins loaded into PyMOL Image:group_on1.png|Applied the group command to the proteins via: "group efHand, *" Image:group_on2.png|The plus was clicked and expanded to show the hierarchy of objects.
group name, members, action
group efHand, 1cll 1ggz 1sra # allow addition and removal from the group group efHand, open # disallow addition/removal from the group group efHand, close
Group objects can usually be used as arguments to commands. It can be processed as a group or as a selection, in which case all the atoms from all objects in the group will be used.