Files with the AIN extension are compressed data files used in archiving shareware and MS DOS compatible programs. Information stored in the AIN format can be viewed and edited with the appropriate software tools.
File extension AIN is related to Atribute index file (ArcView index file). Attribute:* Nonspatial information about a geographic feature in a GIS, usually stored in a table and linked to the feature by a unique identifier. For example, attributes of a river might include its name, length, and sediment load at a gauging station. * In raster datasets, information associated with each unique value of a raster cell.* Information that specifies how features are displayed and labeled on a map; for example, the graphic attributes of a river might include line thickness, line length, color, and font for labeling.* In MOLE, aspatial information about a geographic feature in a GIS, usually stored in a table and linked to the feature by a unique identifier. For example, attributes of a force element might include its name and speed. Most MOLE attributes are what some military specifications refer to as labels or modifiers.
Game data file used by games developed with Source, a first-person shooter (FPS) game engine developed by Valve; stores a navigation mesh, which consists of points and connected lines that make up potential traversal paths for artificial intelligence (AI) non-player characters (NPCs), or "bots;" used for real-time navigation and movement for AI computer players. The original nodegraph is created using the Level Designer component of the Source engine SDK, which is called the Valve Hammer Editor. Once complete, an AIN file is automatically compiled by the Source engine when the game is loaded. The compiled AIN file is saved to the \maps\graphs\ directory within the game installation directory. NOTE: The Valve Source engine is used for games such as Half-Life 2 and Team Fortress 2.