The flag of Spain, as it is defined in the Spanish Constitution of 1978, consists of three horizontal stripes: red, yellow and red, the yellow stripe being twice the size of each red stripe.
Traditionally, the middle stripe was defined by the more archaic term of gualda (weld) but this word was removed from the draft of the Constitution by an amendment of Camilo José Cela, a writer appointed by the king as Senator to the Constituent Cortes, nevertheless the term appears again on the Royal Decree by which the technical specifications of the colours of the flag are regulated.
Traditionally, the middle stripe was defined by the more archaic term of gualda (weld) but this word was removed from the draft of the Constitution by an amendment of Camilo José Cela, a writer appointed by the king as Senator to the Constituent Cortes, nevertheless the term appears again on the Royal Decree by which the technical specifications of the colours of the flag are regulated.
The state and war flags and ensigns (Bandera de España con escudo de España) must be charged with the Spanish coat of arms. The coat of arms must be placed at 1/3 the flag's length towards the hoist, and the height of the coat of arms should measure two fifths of the flag's width (i.e. hoist).
This version is stated to be used on state, autonomic, local andinstitutional buildings and ships, but it is used everywhere byeverybody in every circumstance, having acquired "de facto" the status of national flag.