For example, the displayed line /vis/drawLogicalVolume <logical-volume-name> <depth-of-descent> <booleans-flag> <voxels-flag> <readout-flag> <axes-flag> <check-overlap-flag> should read /vis/drawLogicalVolume <logical-volume-name> [<depth-of-descent>] [<booleans-flag>] [<voxels-flag>] [<readout-flag>] [<axes-flag>] [<check-overlap-flag>]
Fix