and pointing direct to the centre of St George's Cross in the Union Flag; five white stars (representing the Southern Cross) in the half of the flag further from the staff. The location of the stars is as follows: Commonwealth Star – 7-pointed star, centred in lower hoist. Alpha Crucis – 7-pointed star, straight below centre fly up from bottom edge. Beta Crucis – 7-pointed star, of the way left and up from the centre fly. Gamma Crucis – 7-pointed star, straight above centre fly down from top edge. Delta Crucis – 7-pointed star, of the way right and up from the centre fly. Epsilon Crucis – 5-pointed star, of the way right and down from the centre fly. The outer diameter of the Commonwealth Star is of the flag's width, while that of the stars in the Southern Cross is of the flag's width, except for Epsilon, for which the fraction is . Each star's inner diameter is of the outer diameter. The flag's width is the measurement of the hoist edge of the flag (the distance from top to bottom). Protocol Guidelines for flying the flag are laid out in the 1953 Flags Act and in a pamphlet entitled "The Australian National Flag", which is infrequently published by the Australian Government. The guidelines say that the Australian National Flag is allowed to be flown on every day of the year, and that it "should be treated with respect and dignity it deserves as the nation's most important national symbol". The National Flag must always be flown in a position superior to that of any other flag or ensign when flown in Australia or on Australian territory, and it should always be flown aloft and free. The flag must be flown in all government buildings and displayed in polling stations when there is a national election or referendum. Private pleasure craft can fly either the Red Ensign or the Australian National Flag. The British Blue Ensign can be flown on an Australian owned ship instead of the Australian Flag if the owner has a warrant valid under British law. The Department of the Prime Minister and Cabinet also advises that the flag should only be flown during daylight hours, unless it is illuminated. Two flags should not be flown from the same flagpole. The flag should not be displayed upside down under any circumstances, not even to express a