CAD file used by AutoCAD, a professional CAD drawing application; stores a hatch pattern which can be used to texturize or fill an area; helps give a material appearance (e.g., brick, aluminum, glass, or plastic) to drawn objects.

Hatch patterns are vector-based and are written in a plain text format. Consult the AutoCAD documentation to learn the syntax used for writing hatch patterns.

Vector pattern used by CorelDRAW Graphics Suite, a suite of programs that includes both raster and vector graphics editing applications; saves a pattern that can be repeated within a vector image or page layout document; often used for applying background textures.

Corel CONNECT, a graphics content browsing application included with CorelDRAW Graphics Suite, provides a graphics content package that includes several vector patterns, which can be included in images or documents.

System file used by DiskStation Manager (DSM), the operating system used for Synology NAS devices; contains the files required to install or update the low-level operating system software that runs the device; can be used from the DSM Control Panel by choosing "DSM Update" and then the "Manual Update" option.

PAT files are also used by Synology Assistant, a program used for installing firmware onto DSM devices. During the DSM device setup process, the Synology Assistant requests the PAT installation file for the device. You can retrieve the PAT file from your Synology installation CD or from the Synology download center.

Instrument patch file containing voices that can be played back by Gravis GF1-based sound cards; supports up to 16 waveforms per instrument, but does not support multiple layers.

Cheat codes file used by Kega Fusion, an emulator for the Sega MegaDrive (a.k.a. Sega Genesis) console system; saved in a plain text format and contains cheat codes for Sega games; can be referred to as a "patch" file.

Ketron sound pattern format used to play different styles for the Ketron keyboards including the SD1, SD3, SD5, and Audya models; contains style sounds, levels, and effects; can be used for a wide variety of genres such as Rock, Jazz, Pop, R&B, Latin, Dance, and Gospel.

On SD models, the PAT files are located in the STYLE folder within the MASTER FOLDER, which is accessed when you push the MASTER FOLDER button on the keyboard. Depending on the keyboard version you are using you can load the PAT file via a floppy disk or USB drive. You can create a PAT file with the "Pattern Edit" function on SD models. On Aduya models, the PAT file is commonly accompanied by a .BIN file which contains the parameters for the style contained in the PAT file. NOTE: You can open PAT files with Ketron software for the appropriate model of your keyboard.

Bitmap image used as a pattern that can be imported into multiple graphics programs; typically a square file that may be 8x8 pixels to 256x256 pixels in size; repeats to fill an area with the pattern; often used for creating a textured background.