In heraldry, yellow and white usually represent the two metals, gold and silver, which are not placed side by side. Special exception is made in this case because they also represent the keys of Saint Peter.
Flags are also used in messaging or advertising, or for decorative purposes, though at this less formal end the distinction between a flag and a simple cloth banner is blurred.
The flag of Argentina, created by Manuel Belgrano during the war of independence, was the inspiration for the United Provinces of Central America´s flag, which in turn was the origin for the flags of Guatemala, El Salvador, Honduras and Nicaragua.
They use the flags to indicate to the referee potential infringements of the laws, or who is entitled to possession of the ball that has gone out of the field of play, or, most famously, raise the flag overhead to indicate an offside offence.
VaticanCity — formally State of the VaticanCity, or VaticanCity State (Latin: Status Civitatis Vaticanæ and Italian: Stato della Città del Vaticano) — is an ecclesiastical sovereign landlocked enclave surrounded by Rome, Italy.
VaticanCity is considered a non-hereditary elective monarchy with a sovereign who exercises absolute authority.
The VaticanCity, one of the European microstates, is situated on the Vatican Hill in the north-western part of Rome, several hundred metres west of the Tiber river, on the latter's right bank.