GR-Postal for QBCore is a system that allows you to use postal codes and their associated names as 2D vectors within the QBCore framework. This makes it possible to calculate the distance between different locations by using the coordinates of postal codes. The system enables you to see how far you are from a specific marker or location, which is useful for a variety of applications such as navigation, location-based features, or simply knowing your position relative to other places in the game. GR-Postal is a versatile solution for integrating postal codes and geographic analysis into your QBCore server, suitable for all types of applications.