This template'sinitial visibility currently defaults toautocollapse, meaning that if there is another collapsible item on the page (anavbox, sidebar, ortable with the collapsible attribute), it is hidden apart from its title bar; if not, it is fully visible.
To change this template's initial visibility, the|state=parameter may be used:
{{Area code list|state=collapsed}} will show the template collapsed, i.e. hidden apart from its title bar.{{Area code list|state=expanded}} will show the template expanded, i.e. fully visible.This macro is placed on the primary listing page for all the area codes in each state or country in theNorth American Numbering Plan. If a state has more than one area code, it should link the state to a page such as[[List of Idaho area codes|Idaho]]. Where there is a page listing all area codes for that state or country, each area code listed on it should point back to the state's area code list page. If there is only one area code for the country or state, then it is placed on that area code page, e.g.[[Area code 302|Delaware]].