# Documentation

The wiki is where you can find out information about using the software, the codes, or the API.

### Common pages

* [External Implementations](External_Implementations.md) - need an Ada or Typescript library?
* [Frequently Asked Questions (FAQ)](FAQ.md)
* [Who is using Plus Codes?](Reference/Plus_Code_Users.md)

### Specification and technical implementation

* [Open Location Code Overview](Specification/olc_definition.adoc)
* [Open Location Code Specification](Specification/specification.md)
* [Guidance for Shortening Codes](Specification/Short_Code_Guidance.md)
* [Open Location Code Reference API](Specification/API.md)
* [Plus Codes and Open Location Code Naming Guidelines](Specification/Naming_Guidelines.md)

### Technical

* [An Evaluation of Location Encoding Systems](Reference/comparison.adoc)
* [Supporting Plus Codes in GIS software](Reference/GIS_Software.md)
* [Supporting Plus Codes in an app](Reference/App_Developers.md)

### Tools

* [Field Data Collection Practices](Reference/Field_Collection_Data_Practices.md)
* [https://plus.codes API Reference](Reference/plus.codes_Website_API.md)
* [Using Plus Codes in Spreadsheets](Reference/Using_Spreadsheets.md)
