<P> When the Indian flag is displayed with non-national flags, including corporate flags and advertising banners, the rules state that if the flags are on separate staffs, the flag of India should be in the middle, or the furthest left from the viewpoint of the onlookers, or at least one flag's breadth higher than the other flags in the group . Its flagpole must be in front of the other poles in the group, but if they are on the same staff, it must be the uppermost flag . If the flag is carried in procession with other flags, it must be at the head of the marching procession, or if carried with a row of flags in line abreast, it must be carried to the marching right of the procession . </P> <P> The flag should be flown at half - mast as a sign of mourning . The decision to do so lies with the President of India, who also decides the period of such mourning . When the flag is to be flown at half mast, it must first be raised to the top of the mast and then slowly lowered . Only the Indian flag is flown half mast; all other flags remain at normal height . </P> <P> The flag is flown half - mast nationwide on the death of the president, Vice-president or prime minister . It is flown half - mast in New Delhi and the state of origin for the Speaker of the Lok Sabha, Chief Justice of the Supreme Court, and Union Ministers . On deaths of Governors, Lt. Governors and Chief Ministers, the flag is flown at half - mast in the respective states and union territories . </P> <P> The Indian flag cannot be flown at half - mast on Republic Day (26 January), Independence day (15 August), Gandhi Jayanti (2 October), National Week (6--13 April) or state formation anniversaries, except over buildings housing the body of the deceased dignitary . However, even in such cases, the flag must be raised to full - mast when the body is moved from the building . </P>

Blue wheel at the center of the national flag. what does it represent