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A numbering plan area with multiple area codes is called an overlay. Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. [1] Area codes with two identical trailing digits are easily recognizable codes (ERC).
An area code overlay is a numbering plan area (NPA) in the North American Numbering Plan (NANP) that has multiple area codes assigned. Overlay complexes are used to add central office prefixes in an NPA to increase the number of available telephone numbers .
In telecommunications, an area code overlay complex is a telephone numbering plan that assigns multiple area codes to the same geographic numbering plan area (NPA). Area code overlays are implemented in territories of the North American Numbering Plan (NANP) to mitigate exhaustion of central office codes in growth areas. The method has been in ...
In HTML and XHTML, an image map is a list of coordinates relating to a specific image, created in order to hyperlink areas of the image to different destinations (as opposed to a normal image link, in which the entire area of the image links to a single destination). For example, a map of the world may have each country hyperlinked to further ...
If another area code borders on more than one direction put it in multiple directions. If an area code borders on an odd direction such as northwest, code both N=and W=. To make them clickable links, include the description surrounded by link brackets, e.g. if the area code to the north of this area code is 710, you'd code N=[[Area code 710]].
This macro is placed on the primary listing page for all the area codes in each state or country in the North American Numbering Plan. If there is more than one area code for a state, 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 ...
The "frame" is the (cropped) area visible in the final rendered image. Set its height and width. "back" is the background image. Just use the filename without [[File: etc. Its height is set to determine its scale. By default its top-left corner is aligned with the top-left corner of the frame.
The following examples document the use of the overlay_image parameter in the {{Location map+}} template. This parameter is also available via the {{ Location map }} and {{ Location map many }} templates.